MIL-A-8625F_铝及铝合金阳极氧化膜层的军用标准-中文版
STDMILAF铝阳极氧化中文版
M I L I T A R Y S P E C I F I C A T I O N军用规范ANODICCOATINGSFORALUMINUMANDALUMINUMALLOYS铝和铝合金的阳极氧化涂层ThisspecificationisapprovedforusebyallDepartmentsandAgenciesoftheDepartmentofDefen se.本规范可以用于国防部的所有部门及机构。
1. SCOPE范围1.1Scope.Thisspecificationcoverstherequirementsforsixtypesandtwoclassesofelectrolytica llyformedanodiccoatingsonaluminumandaluminumalloysfornon-architecturalapplications(s ee6.1).1.1范围本标准包括非建筑用途的铝和铝合金的6类和2级电解生产的阳极氧化膜的要求(见6.1)1.2Classification.TheanodiccoatingTypesandClassescoveredbythisspecificationareasspe cifiedherein(see6.2and6.21):1.2分类本标准所列阳极氧化膜的类型和级别如下：1.2.1Types类型TypeI-Chromicacidanodizing,conventionalcoatingsproducedfromChromicacidbath(seeI类---铬酸阳极氧化，在铬酸槽生成的常规氧化膜(见3.4.1)TypeIB-Chromicacidanodizing,lowvoltageprocess,22±2V,(see3.4.1)IB类---铬酸阳极氧化，低电压工艺，22±2V(见3.4.1)TypeIC-Non-chromicacidanodizing,foruseasanon-chromatealternativeforTypeIandIBcoati ngs(see3.4.1andIC类---非铬酸阳极氧化，应用非铬酸的配方生成的I和IB类氧化膜(见3.4.1)和(6.1.2)TypeII-Sulfuricacidanodizing,conventionalcoatingsproducedfromsulfuricacidbath(seeII类---硫酸阳极氧化，在硫酸槽生成的常规的氧化膜(见3.4.2)TypeIIB-Thinsulfuricacidanodizing,foruseasanon-chromatealternativeforTypeIandIBcoatin gs(see3.4.2andIIB类---硫酸阳极氧化膜，应用非铬酸的配方生成的I和IB类氧化膜(见3.4.1和6.1.2)TypeIII-HardAnodicCoatings(seeIII类---硬质阳极氧化膜(见3.4.3)1.2.2Classes.等级Class1-Non-dyed(see3.5.)1级-无染色(见3.5)Class2-Dyed(see3.6.)2级-染色的(见3.6)Beneficialcomments(recommendations,additions,deletions)andanypertinentdatawhichma ybeofuseinimprovingthisdocumentshouldbeaddressedto:CommandingOfficer,NavalAirWa rfareCenterAircraftDivisionLakehurst,CodeSR3,Lakehurst,NJ08733-5100,byusingtheSelf-addressedStandardizationDocumentImprovementProposal(DDForm1426)appearingatthe endofthisdocumentorbyletter有用备注(建议书、添加、删除)及任何相应资料都可以用于本文件的改进，可以将资料通过本文件末尾的标准化文件改进策划书(DD格式1426)或信件的形式发给：新泽西08733-5100，莱克赫斯特，代码SR3，莱克赫斯特海军空战中心航空分部。
MIL-A-8625F 阳极氧化 中文版
MIL-A-8625F1998年4月25日美国军事标准铝和铝合金的阳极氧化膜此标准由由美国国防部所有部门和科室批准使用1.范围1.1范围本标准包括非建筑用途的铝和铝合金的6类和2级电解生成的阳极氧化膜的要求（见6.1）。
1.2分类本标准所列阳极氧化膜的类别和级别如下：1.2.1分类Ⅰ类- 铬酸阳极氧化，在铬酸槽生成的常规氧化膜（见3.4.1）ⅠB类- 铬酸阳极氧化，低电压工艺，22±2V（见3.4.1）ⅠC类- 非铬酸阳极氧化，应用非铬酸的配方生成的Ⅰ和ⅠB类氧化膜（见3.4.1和6.1.2）Ⅱ类- 硫酸阳极氧化，在硫酸槽生成的常规氧化膜（见3.4.2）ⅡB类- 硫酸阳极氧化薄膜，应用非铬酸的配方生成的Ⅰ和ⅠB类氧化膜（见3.4.1和6.1. 2）Ⅲ类- 硬质阳极氧化膜（见3.4.3）1.2.2级别1级- 不染色（见3.5）2级- 染色（见3.6）2.适用文件2.1政府文件2.1.1规范和标准下面的规范和标准构成本标准的组成部分。
（此处有删节）规范军事规范MIL-P-23377 耐化学和溶剂腐蚀的环氧聚酰胺涂层，MIL-C-81706 铝和铝合金的化学转化膜MIL-P-85582 水性环氧树脂涂层联邦规范QQ-A-250/4 2024铝合金的板和薄板标准联邦标准FED-STD-141 油漆，清漆，硝基漆和相关材料：取样和测试方法。
FED-STD-151 金属：测试方法军事标准MIL-STD-105 取样程序和质量检查表2.2非政府出版物下面的规范和标准构成本标准的组成部分。
（此处有删节）美国试验和材料学会(ASTM)ASTM B 117 盐雾试验方法ANSI/ASTM B 137 铝和铝合金的阳极氧化膜的重量测试ASTM B 224 利用涡流仪测试铝氧化膜厚度，以及其它非磁性材料上的非导电层的厚度 ASTM D 822 测定油漆，清漆，硝基漆和其它产品的曝光和曝水仪（碳-电弧型）的标准使用方法ASTM D 2244 不透明材料色差的仪器测试ASTM G 23 有水和无水的非金属材料曝光测试的曝光仪（碳-电弧型）的标准使用方法 ASTM G 26 有水和无水的非金属材料曝光测试的曝光仪（氙-电弧型）的标准使用方法2.3优先程序在本标准和所引用的参考文件有矛盾时，本标准具有优先权，但是本标准不能超越现行的相关法律和法规。
美国军方标准MIL-A-8625
MIL-A-8625E3.3.1.2 复杂工件阳极氧化：对形状复杂的工件进行阳极氧化时，电解质可能包埋工件孔穴。
所以，如采用本工艺，则须确保不会因电解质包埋而引发后续损伤（除指定特定镀层外，应采用I类或IA类镀层）。
3.3.2 处置及清洗应在前处理、阳极氧化及后处理中处置工件，以避免机械损耗及污染。
工件上不得有任何杂质、氧化物或土，包括：油脂、油污、涂料及助焊剂。
应采取适当清洗工序去除工件表面的氧化层及其它干扰层，以确保表面清洁且无水膜残痕。
因为磨料中含有铁、钢丝棉、粗糙的铁氧化物及钢线，这些物质都可能嵌进金属，加速铝及其合金的腐蚀，故阳极氧化前禁止采取机械清洗。
如要求进行特定清洗，则应在合同或订单中表明（见6.2）。
3.3.3 镜面表面处理如合同或订单中已指定（见6.2），则需在阳极氧化前将需要取得高反射性表面的工件进行化学或电化学光亮处理(见6.9）。
3.3.4 修整（机械损耗、接触痕）除非另有规定，否则任何机械损耗区域（阳极氧化层磨损，但未伤及工件的区域）应采用化学转化材料（参见1A类镀层QPL-81760）及其它可实施的方法进行修整。
本修整条例只适用于不慎导致的机械损伤，如划痕。
针对III类镀层，只能对后期不会遭受研磨的区域进行修整（见6.1.1）。
受损区域应小于总阳极氧化面积5%,否则不予整修。
如在合同或订单中有明确规定（见6.2），可采用上述用于修整机械损伤的方法来修整接触痕。
3.4 镀层正如合同、订单及可实施提款中所指定，可通过任何工艺或操作在铝和铝合金表面形成特定膜，以制得传统阳极氧化层。
3.5 I、IB和IC类镀层I和IB类镀层：在含有铬酸的槽液中电解处理铝和铝合金，从而在金属表面生成均一阳极氧化膜。
IC类镀层：在含有矿物质或含有矿物质和有机酸混合物（不含铬酸）的槽液中电解处理铝和铝合金，从而在金属表面生成均一的阳极氧化膜。
除非在合同、订单或可实施的条款中已明确，否则，不得采用标定铜含量>5%，或标定硅含量>7%，或标定合金成分的总含量>7.5%的铝合金来制取I类镀层。
SMILAF铝阳极氧化中文版
M I L I T A R Y S P E C I F I C A T I O N军用规范ANODICCOATINGSFORALUMINUMANDALUMINUMALLOYS铝和铝合金的阳极氧化涂层ThisspecificationisapprovedforusebyallDepartmentsandAgenciesoftheDepart mentofDefense.本规范可以用于国防部的所有部门及机构。
1. SCOPE范围1.1Scope.Thisspecificationcoverstherequirementsforsixtypesandtwoclassesof electrolyticallyformedanodiccoatingsonaluminumandaluminumalloysfornon-arc hitecturalapplications(see6.1).1.1范围本标准包括非建筑用途的铝和铝合金的6类和2级电解生产的阳极氧化膜的要求(见6.1)1.2Classification.TheanodiccoatingTypesandClassescoveredbythisspecificatio nareasspecifiedherein(see6.2and6.21):1.2分类本标准所列阳极氧化膜的类型和级别如下：1.2.1Types类型TypeI-Chromicacidanodizing,conventionalcoatingsproducedfromChromicacidb ath(seeI类---铬酸阳极氧化，在铬酸槽生成的常规氧化膜(见3.4.1)TypeIB-Chromicacidanodizing,lowvoltageprocess,22±2V,(see3.4.1)IB类---铬酸阳极氧化，低电压工艺，22±2V(见3.4.1)TypeIC-Non-chromicacidanodizing,foruseasanon-chromatealternativeforTypeI andIBcoatings(see3.4.1andIC类---非铬酸阳极氧化，应用非铬酸的配方生成的I和IB类氧化膜(见3.4.1)和(6.1.2)TypeII-Sulfuricacidanodizing,conventionalcoatingsproducedfromsulfuricacidba th(seeII类---硫酸阳极氧化，在硫酸槽生成的常规的氧化膜(见3.4.2)TypeIIB-Thinsulfuricacidanodizing,foruseasanon-chromatealternativeforTypeI andIBcoatings(see3.4.2andIIB类---硫酸阳极氧化膜，应用非铬酸的配方生成的I和IB类氧化膜(见3.4.1和6.1.2)TypeIII-HardAnodicCoatings(seeIII类---硬质阳极氧化膜(见3.4.3)1.2.2Classes.等级Class1-Non-dyed(see3.5.)1级-无染色(见3.5)Class2-Dyed(see3.6.)2级-染色的(见3.6)Beneficialcomments(recommendations,additions,deletions)andanypertinentda tawhichmaybeofuseinimprovingthisdocumentshouldbeaddressedto:Commandi ngOfficer,NavalAirWarfareCenterAircraftDivisionLakehurst,CodeSR3,Lakehur st,NJ08733-5100,byusingtheSelf-addressedStandardizationDocumentImprove mentProposal(DDForm1426)appearingattheendofthisdocumentorbyletter有用备注(建议书、添加、删除)及任何相应资料都可以用于本文件的改进，可以将资料通过本文件末尾的标准化文件改进策划书(DD格式1426)或信件的形式发给：新泽西08733-5100，莱克赫斯特，代码SR3，莱克赫斯特海军空战中心航空分部。
mill-a-8625中文版
Type1—铬酸阳极Type2硫酸阳极Type3—低温硬质氧化軍用規格說明鋁和鋁合金的陽極氧化塗層这些说明以经过所有防卫部门和代理处的批准。
范围1.1 范围。
这些说明包话六种类型和两种电流形成的铝胶片阳极电镀和非建筑物的铝合金的一些具体要求1.2 分类：阳极氧化涂层的形式和分类的一些具体事项也在此说明（见6.2和6.21）1.2.1 类型TYPE I---含三价铬酸阳极电镀，常规胶片是从铬酸盐中提炼出来。
TYPE IB-含三价铬酸阳极电镀，低电压工序22±2V（见3.4.1）TYPE IC--- 非三价铬阳极电镀，用作一种转换TYPE I和IB涂层的非铬酸盐（见3.4.1和6.1.2）TYPEII---- 硫磺酸阳极电镀。
常规的涂层是从硫磺酸提炼出来的TYPEIII----薄硫磺酸阳极电镀，用作一种非铬酸盐来转换TYPE I和IB涂层的。
TYPEIII--- 坚硬的阳极氧化涂层处理。
1.2.2 分类.类别1 非染色（见3.5）类别2 染色（见3.6）2.可应用文件2.1官方文件2.1.1 详细说明和标准.以下具体要求和标准形成文件一部份。
除非有特别要求。
这些文件的问题争端已在防卫部门争端问题上列举出来。
具体说明军方MIL-P-23377 初次涂层，环氧聚酰胺和化学溶剂低抗。
MIL-C-81706 铝胶片和铝合金的材质化学转换MIL-P-85582 初次涂层，环氧化和水上处理。
联邦QQ-A –250/4 铝合金2024标准联邦FED-STD-141- 印刷、清漆、以及一些相关材质的取样和测试方法FED-STD-151- 金属检测方法军方MIL-STD-105—通过分配来对取样工序和表格来检测2.2 非官方发行物，在某中程度上要求已特别注名在内，除非有特别要求，DOD采纳的文件争端问题已在DODISS争端上列举出来。
美国检测材质方法ATMS B 117----盐喷射检测方法ANSI/ASTM B 137----测量铝在阳极电镀重量ASTM B 244 铝胶片在阳极电镀上的浓度和另一种非导体胶片在无磁性金属基础上旋转仪器上量。
MIL-A-8625F-TYPE I&II
MILITARY SPECIFICATIONANODIC COATINGS FOR ALUMINUM AND ALUMINUM ALLOYSThis specification is approved for use by all Departments and Agencies of the Department of Defense.1. SCOPE1.1 Scope. This specification covers the requirements for six types andtwo classes of electrolytically formed anodic coatings on aluminum andaluminum alloys for non-architectural applications (see 6.1). ~1.2 Classification. The anodic coating Types and Classes covered by thisspecification are as specified herein (see 6.2 and 6.21):1.2.1 TypesTYPE I --Chromic acid anodizing, conventional coatings produced from chromic acid bath (see 3.4.1)TYPE II --Sulfuric acid anodizing, conventional coatings produced from sulfuric acid bath (see 3.4.2)3.4.1 Type I, IB, and IC coatinqs. Type I and IB coatings shall be theresult of treating aluminum and aluminum alloys electrolytically in a bathcontaining chromic acid to produce a uniform anodic coating on the metalsurface. Type IC coatings shall be the result of treating aluminum andaluminum alloys electrolytically in a bath containing mineral or mixedmineral/organic acids (non-chromic acid) to produce a uniform anodic coatingon the metal surface. Unless otherwise specified in”the contract, purchaseorder or applicable drawing, Type I coatings shall not be applied to aluminumalloys with a nominal copper content in excess of 5.0 percent; nominal siliconcontents in excess of 7.0 percent; or when the total allowable contents ofnominal alloying elements exceed 7.5 percent. Heat treatable alloys which areto receive a Type I, IB, or IC coating shall be in the required temperobtained by heat treatment, such as -T4, -T6, or T73, prior to anodizing.3.4.2 Type II and 116 coatlnqs. Type II and 116 coatings shall be theresult of treating aluminum and aluminum alloys electrolytically in a bathcontaining sulfuric acid to produce a uniform-anodic coating on-the metalsurface. Heat treatable alloys shall be in the required temper obtained byheat treatment, such as -T4, -T6,or T73, prior to anodizing.Class 1 -Non-dyed (see 3.5.)Beneficial comments (recommendations, additions, deletions) and anypertinent data which may be of use tn improving this document should beaddressed to: commanding Officer, Naval Air Warfare Center AircraftOivtslon Lakehurst, Code SR3, Lakehurst, NJ 08733-5100, by using theself-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.3.5 Class 1. When class 1 is specified in the contract or purchase order(see 6.2), the anodic coating shall not be dyed or pigmented. Any naturalcoloration resulting from anodic treatment with the various alloy compositionsshall not be considered coloration. The characteristic color Imparted by thesealing process shall also be considered as non-dyed.6.2 Acquisition requirements. Acquisition documents should specify the following:a. Title, number and date of this specification.b. Type of anodic coating (see 1.2.11).c. Class of anodic coatinq (see 1.2.21).d. Special process operatinq conditions, if applicable ( see 3.2).e. Special cleaning and fabrication requirements (see 3.3.1, 3.3.2,and 3.3.3).f. If coating weight for Type IC can exceed the maximum specified inTable I.g. Color and uniformity of Class 2 coatings, if applicable (see 3.6.1 and 3.12}.h. Degree of non-uniformity of dyed casting alloys (see 3.6.1.1).i. Light fastness resistance, if applicable, and a Delta E value if different than 3 (see3.7.1.3).j. Type III coating thickness, if applicable (see 3.7.2.1).k. Coating weight for thickness, Type III, if substituted (see 3.7.2.1.1).l. Special sealing requirements (see 3.8).m. When applicable, the allowable difference in anodic coating appearance resulting from inherent base metal differences (see 3.13).n. Provide the specific location of contact marks if important to the function of the part (see 3.13.1 and 6.14).o. Acceptance criteria for quality conformance inspections (see 4.4.2 and 6.20).P. If paint adhesion testing is required for quality conformance testing (see 4.4) and the required paint system (if different than that in 4.4.3.1).MMC（MultiMedia Card）卡由西门子公司和首推CF的SanDisk于1997年推出。
MIL-A-8625 中文版
3.5 1 级 如果在合同或订购单有规定 1 级（见 6.2），阳极氧化膜不应染色。任何各种不同成分的铝和 铝合金的阳极氧化形成的自然发色不应视作染色。由封闭工艺获得的特殊颜色也不应视作染色。
3.6 2 级 如果在合同或订购单有规定 2 级（见 6.2），则阳极氧化膜应在各种染料溶液中均匀染色精制 铝和铝合金上的颜色应均匀。铸铝往往由铸件本身的孔隙会有褪色或失色的现象。使用的染料不应造成对
3.7.1.3 耐晒牢度 除非在合同，订购单或适用图纸另有规定，2 级染色的阳极氧化膜在经过耐晒试验（见 4.5.4）后，其褪色程度应相当于 DELTA（E）=3。（见 6.2）
3.7.2 III 类氧化膜 3.7．2．1 氧化膜的厚度 除非合同，订购单和适用图纸另有规定（见 6.2），其正规氧化膜厚度应该是 0.002inch（2mils）（见 6.16，6.17 和 6.10 到 6.10.5）。如没特殊规定，对于厚度在 0.002inch 以下的
3.8.1.2 2 级 2 级的氧化膜应浸在如下溶液中进行封闭：含 0.5%的醋酸镍或醋酸钴（pH5.5～5.8），沸 去离子水，或者热醋酸镍和热重铬酸钠溶液的双重封闭（见 6.11），或其它适当溶液。 3.8.2 III 类 对于主要使用功能是获得最大耐磨能力 III 类氧化膜，就不能封闭。对于用于室外，不用 维护，而且要求耐腐蚀，但耐磨性能要求不高的 III 类氧化膜，则应在合同，订货单中注明封闭要求。对 于这类用途的 III 类氧化膜，应浸在沸去离子水，5%重铬酸钠热溶液，醋酸镍或醋酸钴热溶液，以及其它 适当化学溶液中封闭（见 6.2）。对于不需要封闭的 III 类氧化膜的零部件，则需在阳极氧化后用冷水进 行彻底清洗。
MIL-A-8625F铝和铝合金的阳极氧化膜
3.
REQUIREMENTS
3.{ Materials. The materials used shall be such as to produce coatings which meet the requirements of this specification. 3.1.1 Base metal. The base metal shall be free from surface defects, caused by machining, cutting, scratching, polishlng, buffing, roughening, bending, stretching, deforming, rolling, sandblasting,vaporblastlng, etching, heat treatment condltlon, alloy chemtstry Imbalance and inclusions, that will cause coated test panels or parts to fafl any of the requirements of this specification. The base metal shall be subjected to cleaning, etching, anodlzlng and seallng procedures as necessary to yteld coatings meeting all requirementsof th!s specification. 3.2 Equipment and processes. The equipment and processes employed shall be such as to produce coatings which meet the requirements of th~s specification.-Unless otherwise specified In the contract, purchase order or applicable drawfng (see 6.2), process operating conditions shall be at the option of the supplfer. 3.3 General. 3.3.1 Anodlztng of parts and assemblies. 3.3.1.1 Anodlzlng of parts. Unless otherwise specified in the contract, purchase ortieror ap@Jicable dr$u?fig(see'6:2), parts shall be anodized after , ,, al? heat treatment,~. machining, ~e?dlr!g?formingand perforating have been . completed. ! 3.3.1.2 Anod~zhd of assemb~ies. 'Unlessotherwise speclfled In the contract, purchase"brderor applicable drawi%g, anodic coatings shall not be applied to-assembltes whtch'will' entrapthe'electrolyte In joints or recesses (components shall be anodized separately prior to assembly). Nhen anodlzlng of assemblies is authorized by the;coit~actj purchase,orderor applicable drawing, the proce,sslng,fflet~od 's~all not result in subsequent damage to used the assembly from electrolyte entraprnent[Type I or"IA coatings shall be used ( unless another coating Type Is specl,fied). Assemblies which contain non-aluminumparts such as steel, brass or organic substances, which would be attacked by pretreatment or anodizing solutlons or would prevent un{form formation of the anodlc coating, shall not be anodized as assemblies, unless the non-aluminum surfaces are masked or electrically insulated In a manner which produces anodlc coatings meeting the requirements of this specification.
铝阳极氧化MIL-A-8625F标准中文版
铝阳极氧化 MIL-8625F 标准中文版
美国军事标准 铝和铝合金阳极氧化膜 此标准由美国国防部所有部门和科室批准使用
1. 范围 1.1 范围 本标准包括非建筑用途的铝和铝合金的 6 类和 2 级电解生产的阳极氧化膜的要求 （见 6.1） 1.2 分类 本标准所列阳极氧化膜的类别和级别如下：
ANSI/ASTM B 137 铝和铝合金的阳极氧化膜的重量测试 ASTM B 224 利用涡流仪测试铝氧化膜厚度，以及其它非磁性材料上的非导电层的厚 度 ASEM D 822 测定油漆，清漆，硝基漆和其它产品的曝光和曝光仪（碳-电弧型）的标 准使用方法 ASTM D 2244 不透明材料色差的仪器测试 ASTM G 23 有水和无水的非金属材料曝光测试的曝光仪（碳-电弧型）的标准使用方 法 ASTM G 26 有水和无水的非金属材料曝光测试的曝光仪（氙-电弧型）的标准方法 2.3 优先程序 在本标准和所引用的参考文件有矛盾时，本标准具有优先权，但是本标准 不能超越现行的相关法律和法规。 3.要求 3.1 材料 使用的材料应能产生符合本标准要求的氧化膜。 3.1.1 基体金属 基体金属的表面应无任何由于机加工，切割，刮削，抛光，弯曲， 拉伸，滚轧，热处理，合金的化学失衡和掺杂等等引起的表面缺陷，这种缺陷可能导致阳 极氧化测试板或零部件不符合本标准的任何一个要求。基材金属应经过清洗，腐蚀，阳极 氧化和封闭，亦获得满足本标准要求的阳极氧化膜。 3.2 设备与工艺 使用的设备和工艺保证所有的阳极氧化膜满足本标准的所有要求。除非 在合同，订购单或适用图纸另有规定的操作条件应由供应商选择。 3.3 概述 3.3.1 零件和组件的阳极氧化 3.3.1.1 零件的阳极氧化 除非在合同，订购单或适用图纸有特殊要求，必须要等所有的热 处理、机加工、焊接成形和打孔等工序完成之后才能进行阳极氧化。 3.3.1.2 组件的阳极氧化 除非在合同，订购单或适用图纸有特殊要求。在连接处或凹槽中 会截留电解液的组件不能进行阳极氧化（组成组件的零件应单独阳极氧化，再进行装配）。 如果在合同，订购单或适用图纸批准对组件进行阳极氧化，则使用的工艺方法结果不会由 于截留的电解液二使组件受损。（除非规定氧化膜的种类，应采用 I 和 IB 类）。组件中包含 非铝合金零件，例如钢、黄铜、或有机物之类的，它会受到前处理、阳极氧化溶液的腐蚀 或妨碍形成一致的氧化膜，除非非铝表面有遮蔽或者用电流绝缘方法使生成的氧化膜符合 本规范要求。 3.3.1.3 复杂形状的阳极氧化 在对凹槽会截留电解液的复杂零件进行阳极氧化时，采用的 工艺应保证零件不应截留电解液造成相应的损害。（如果没有特殊要求，应采用 I 类或 IB 类 氧化膜。） 3.3.2 搬运和清洁 在零件所有前处理，阳极氧化和后处理得过程中，要避免那些机械损 伤和沾污。零件上应无异物，氧化物，泥土，油脂，油漆，焊药等。应用适当的方法清除 氧化皮和其他中间膜。含有铁质（如铁绒，氧化铁和铁丝之类）研磨剂，它会嵌入金属中， 会加速铝和铝合金的腐蚀，因此禁用铁质研磨剂作为阳极氧化前的机械清洁剂。如有特殊 清洗要求，应会在合同或者订购单上注明。 3.3.3 反射面 当合同或订购单中指明（见 6.2），加工零件具有高发射表面时，则在阳极氧 化前进行化学物或电化学抛光（见 6.9） 3.3.4 修整（机加损伤和挂具点） 除非有特殊要求，对零件上造成阳极氧化膜损伤，但不 损坏零件本身的机械损伤区域应使用 QPL-817061I 所认可的 I 类阳极氧化膜级的化学转换材 料和适用的方法进行修整。修整只能对机加工损伤，像刮痕之类的。至于 III 类阳极氧化膜， 只允许不磨损的区域进行修整（见 6.6.1）。由机加工引起的损伤区域最多不能超过阳极氧
MIL-A-8625F-2003
NOT MEASUREMENTSENSITIVEMIL-A-8625FAMENDMENT 115 September 2003MILITARY SPECIFICATIONANODIC COATINGS FOR ALUMINUM AND ALUMINUM ALLOYS This amendment forms a part of MIL-A-8625F, dated 10 September 1993, and is approved for use by all Departments and Agencies of the Department of Defense.PAGE 22.1.1, under SPECIFICATIONS, MILITARY: Delete “MIL-C-81706 – Chemical Conversion Materials for Coating Aluminum and Aluminum Alloys.”PAGE 33.3.1.2, line 7: Delete “IA…” and substitute “IB.”PAGE 43.3.1.2: Change paragraph number to “3.3.1.3.” In line 4, delete “IA” and substitute “IB.”PAGE 5Add: “3.4.2.2 Photosensitized (identification) nameplates. When type II anodic coatings are specified for use in photosensitized nameplates, oxalic acid anodizing may be used in lieu of sulfuric acid anodizing. If oxalic acid anodizing is used, the resultant coating shall meet the requirements of this specification for type II anodic coatings. If copy and background color are added to photosensitive nameplates, silver compounds or dyes shall be used. Unprocessed photosensitive aluminum shall be classified as class 1. Nameplates made from photosensitive aluminum shall be classified as class 2.”AMSC N/A 1 of 3 AREA MFFP DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.PAGE 63.7.1.2c: Delete and substitute:“c. In addition to the requirements in a and b above, types I and IB test specimens that exhibit large areas of gross discoloration (dark grey areas) shall meet the following additional requirement. The total number and per panel number of pits used to verify that the requirements of a and b above are met shall be determined by adding the number of pits found with the unaided eye to the number of pits found in the areas of gross discoloration determined when examined at a magnification of 10X. This requirement does not apply to areas of slight discoloration or fading such as those areas that may result from chromate leaching during salt spray exposure.”PAGE 9TABLE II: Add “2/ III” to column 2, row 3, Applicable type I, IB, IC, II, IIB.Add the following footnote below the table “2/ Type III coatings shall be tested for corrosion resistance only when it is specified that the coating is sealed.”PAGE 104.3.3.2.3: Delete and substitute: “4.3.3.2.3 Test specimens for corrosion and light fastness resistance. Corrosion resistance shall be determined on undyed and sealed production parts or specimen panels (see 4.3.3.2). When light fastness testing is specified (see 6.2), it shallbe performed on dyed and sealed (class 2) production parts or specimen panels (see 4.3.3.2). When specimen panels are used, they shall have a width of not less than 3 inches, a length of not less than 10 inches, and a nominal thickness of not less than 0.032 inch.PAGE 136.1, line 2: Delete “yipvide” and substitute “provide.”6.1.1, line 7: Change “MIL-C-81706” to “MIL-DTL-81706.”PAGE 186.16, lines 2 and 4: Change “silicone” to “silicon.”PAGE 19Delete 6.23 and substitute:“6.23 Subject term (key word) listing.AnodizingChromatesChromic acidPhosphoric acidPotassium dichromateSodium dichromateSulfuric acidCustodians: Preparing activity:Army – MR Navy - ASNavy – AS (Project MFFP-0698) Air Force – 11Review activities:Army – AR, AV, AT, CR, CR4, MINavy – OS, SHAir Force – 70, 71, 99ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³NOT MEASUREMENT³ ³ SENSITIVE ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ MIL-A-8625F10 September 1993 SUPERSEDINGMIL-A-8625E25 April 1988MILITARY SPECIFICATIONANODIC COATINGS, FOR ALUMINUM AND ALUMINUM ALLOYSThis specification is approved for use by all Departments and Agencies of the Department of Defense.1. SCOPE1.1 Scope. This specification covers the requirements for six types and two classes of electrolytically formed anodic coatings on aluminum and aluminum alloys for non-architectural applications (see 6.1).1.2 Classification. Anodic coating Types and Classes covered by this specification are as specified herein (see 6.2 and 6.21):1.2.1 TypesType I - Chromic acid anodizing, conventional coatings producedfrom chromic acid bath, (see 3.4.1)Type IB - Chromic acid anodizing, low voltage process, 22 +/- 2V,(see 3.4.1)Type IC - Non-chromic acid anodizing, for use as a non-chromatealternative for Type I and IB coatings (see 3.4.1 and 6.1.2) Type II - Sulfuric acid anodizing, conventional coatings producedfrom sulfuric acid bath, (see 3.4.2)Type IIB - Thin sulfuric acid anodizing, for use as a non-chromatealternative for Type I and IB coatings (see 3.4.2 and 6.1.2) Type III - Hard Anodic Coatings (see 3.4.3)1.2.2 Classes.Class 1 - Non-dyed (see 3.5.)Class 2 - Dyed (see 3.6.)ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿³Beneficial comments (recommendations, additions, deletions) and any ³³pertinent data which may be of use in improving this document should be ³³addressed to: Systems Engineering and Standardization Department (Code ³³53), Naval Air Engineering Center, Lakehurst, NJ 08733-5100, by using the ³³self-addressed Standardization Document Improvement Proposal (DD Form 1426)³³appearing at the end of this document or by letter. ³ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ AMSC N/A AREA MFFP DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.MIL-A-8625F2. APPLICABLE DOCUMENTS2.1 Government documents.2.1.1 Specifications, and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation.SPECIFICATIONSMILITARYMIL-C-23377 - Primer Coating, Epoxy-Polyamide, Chemical and Solvent ResistantMIL-C-81706 - Chemical Conversion Materials for Coating Aluminumand Aluminum AlloysMIL-P-85582 - Primer Coatings: Epoxy, WaterborneFEDERALQQ-A-250/4 - Aluminum Alloy 2024, Plate and SheetSTANDARDSFEDERALFED-STD-141 - Paint, Varnish, Lacquer, and Related Materials:Method For Sampling and TestingFED-STD-151 - Metals; Test MethodsMILITARYMIL-STD-105 - Sampling Procedures and Tables for Inspectionby Attributes(Unless otherwise indicated, copies of federal and military specifications and standards are available from DODSSP-Customer Service, Standardization Documents Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)2.2 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2).AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)ASTM B 117 - Method of Salt Spray (Fog) TestingANSI/ASTM B 137 - Weight of Coating on Anodically Coated Aluminum,Measurement ofASTM B 244 - Thickness of Anodic Coatings on Aluminum and ofRelated Products, Standard Practice for Operating 2ASTM D 2244 - Color Differences of Opaque Materials,Instrumental Evaluation ofASTM G 23 - Standard Practice for Operating Light ExposureApparatus (Carbon-Arc Type) With and Without Waterfor Exposure of Non-metallic MaterialsASTM G 26 - Operating Light-Exposure Apparatus (Xenon-ArcType) With and Without Water for Exposure ofNon-metallic Materials(Application for copies should be addressed to the American Society forTesting and Materials, 1916 Race Street, Philadelphia, PA 19103.)2.3 Order of precedence. In the event of a conflict between the text ofthis document and the references cited herein, the text of this documenttakes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.3. REQUIREMENTS3.1 Materials. The materials used shall be such as to produce coatingswhich meet the requirements of this specification.3.1.1 Base metal. The base metal shall be sufficiently free from surface defects, caused by machining, cutting, scratching, polishing, buffing, roughening, bending, stretching, deforming, rolling, sandblasting, vaporblasting, etching, heat treatment condition, alloy chemistry imbalanceand inclusions, that will cause test panels or parts to fail any of the requirements of this specification. The base metal shall be subject to cleaning, etching, anodizing and sealing procedures as necessary to yield coatings meeting all requirements of this specification.3.2 Equipment and processes. The equipment and processes employed shallbe such as to produce coatings which meet the requirements of this specification. Unless otherwise specified in the contract, purchase order or applicable drawing (see 6.2), process operating conditions shall be at the option of the supplier.3.3 General.3.3.1 Anodizing of parts and assemblies.3.3.1.1 Anodizing of parts. Unless otherwise specified in the contract, purchase order or applicable drawing (see 6.2), parts shall be anodized after all heat treatment, machining, welding, forming and perforating have been completed.3.3.1.2 Anodizing of assemblies. Unless otherwise specified in the contract, purchase order or applicable drawing, anodic coatings shall not be appliedto assemblies which will entrap the electrolyte in joints or recesses (components shall be anodized separately prior to assembly). When anodizing of assemblies is authorized by the contract, purchase order or applicabledrawing, the processing method used shall not result in subsequent damage tothe assembly from electrolyte entrapment (Type I or IA coatings shall be used unless another coating Type is specified). Assemblies which containnon-aluminum parts such as steel, brass or organic substances, which would be attacked by pretreatment or anodizing solutions or would prevent uniform3.3.1.2 Anodizing of complex shapes. When anodizing complex shapes which will entrap the electrolyte in recesses, the processing method used shall not result in subsequent damage to the part from electrolyte entrapment (Type I or IA coatings shall be used unless another coating Type is specified).3.3.2 Handling and cleaning. Parts shall be so handled during all pretreatments, anodizing and post treatments that mechanical damage or contamination will be avoided. Parts shall be free of all foreign substances, oxides and soils, such as greases, oil, paint and welding flux. Parts shall have oxide and other interfering films removed by the use of proper cleaning procedures so as to be clean and have water break free surfaces. Abrasives containing iron, such as steel wool, iron oxide rouge and steel wire, which may become embedded in the metal and accelerate corrosion of aluminum and aluminum alloys, are prohibited as a means of mechanical cleaning, prior to anodizing. If special cleaning requirements are required they shall be specified in the contract or order (see 6.2).3.3.3 Reflective surfaces. When specified in the contract or purchase order (see 6.2), parts fabricated to produce a highly reflective surface shall be chemically or electrochemically brightened, prior to anodic coating (see 6.9). 3.3.4 Touch up (mechanical damage and contact marks). Unless otherwise specified (see 6.2), mechanically damaged areas from which the anodic coating has been removed without damage to the part may be touched up using chemical conversion materials approved on QPL-81706 for Class 1A coatings and the applicable method of application. Touch up shall apply only to inadvertent mechanical damage such as scratch marks. For Type III coatings, touch up shall only be allowed in areas which will not be subjected to abrasion (see 6.1.1). The mechanically damaged area(s) shall not exceed 5 percent of total anodized area of the item or touch up shall not be permitted. When specified in the contract or purchase order (see 6.2), contact marks shall be touched up using the above method required for mechanical damage.3.4 Coatings. Conventional anodic coatings as specified in the contract, purchase order or applicable drawings (see 6.2), shall be prepared by any process or operation to produce the specified coating on aluminum and aluminum alloys.3.4.1 Type I, IB and IC coatings. Type I and IB coatings shall be theresult of treating aluminum and aluminum alloys electrolytically in a bath containing chromic acid to produce a uniform anodic coating on the metal surface. Type IC coatings shall be the result of treating aluminum and aluminum alloys electrolytically in a bath containing mineral or mixed mineral/ organic acids (non-chromic acid) to produce a uniform anodic coating on the metal surface. Unless otherwise specified in the contract, purchase order or applicable drawing, Type I coatings shall not be applied to aluminum alloys with a nominal copper content in excess of 5.0 percent; nominal silicon contents in excess of 7.0 percent; or when the total allowable contents of nominal alloying elements exceed 7.5 percent. Heat treatable alloys which are to receive a Type I, IB or IC coating shall be in the required temper obtained by heat treatment, such as -T4, -T6, or T73 prior to anodizing.3.4.1.1 Type IC coatings. Type IC coatings provide a non-chromate alternative to Type I and IB coatings. Unless approved by the procuring activity, substitution of a Type IC coating where Type I or IB is specified shall be prohibited.3.4.2 Type II and IIB coatings. Type II and IIB coatings shall be the result of treating aluminum and aluminum alloys electrolytically in a bath containing sulfuric acid to produce a uniform anodic coating on the metal surface. Heat treatable alloys shall be in the required temper obtained by heat treatment, such as -T4, -T6, or T73, prior to anodizing.3.4.2.1 Type IIB coatings. Type IIB coatings provide a non-chromate alternative to Type I and IB coatings. Unless approved by the procuring activity, substitution of a Type IIB coating where Type I or IB is specified shall be prohibited.3.4.3 Type III coatings. Type III coatings shall be the result of treating aluminum and aluminum alloys electrolytically to produce a uniform anodic coating on the metal surface. Type III coatings shall be prepared by any process operation to produce a heavy dense coating of specified thickness on aluminum alloys (see 3.7.2.1). Unless otherwise specified in the contract, purchase order or applicable drawing, Type III coatings shall not be applied to aluminum alloys with a nominal copper content in excess of 5 percent or a nominal silicon content in excess of 8.0 percent. Alloys with a nominalsilicon content higher than 8.0 percent may be anodized subject to approval of the procuring activity. Heat treatable alloys shall be in a temper obtained by heat treatment, such as -T4, -T6 or T73, prior to anodizing.3.5 Class 1. When class 1 is specified in the contract or purchase order, (see 6.2), the anodic coating shall not be dyed or pigmented. Any natural coloration resulting from anodic treatment with the various alloy compositions shall not be considered coloration. The characteristic color imparted by the sealing process shall also be considered as non-dyed.3.6 Class 2. When class 2 is specified in the contract or purchase order, (see 6.2), the anodic coating shall be uniformly dyed or pigmented by exposure to a solution of a suitable type dye or stain. The color on wrought alloysshall be uniform. Cast alloys may exhibit dye bleed-out or lack of color (or color uniformity) associated with the inherent porosity of the casting. The dyes and pigments used shall not be damaging to the anodic coatings.3.6.1 Dye color. When dyed or pigmented coatings are required, the colorand color uniformity requirements shall be as specified by the contract, purchase order or applicable drawing (see 6.2).3.6.1.1 Casting alloys. Dyed casting alloys may show a slight lack of color uniformity. The degree of non-uniformity that is acceptable shall be established by the procuring activity (see 6.2).3.7 Detail requirements.3.7.1 Types I, IB, IC, II, and IIB coatings.3.7.1.1 Weight of coating. Prior to dyeing or sealing, Type I, IB, IC, II, and IIB coatings shall meet the coating weight requirements of Table I when tested in accordance with4.5.2 (see6.10.6).5TABLE I. Types I, IB, IC, II, and IIB unsealed anodic coating weights.ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿³ Coating Type ³ Coating Weight (mg/ftÀ2Ù) ³ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´³ I and IB ³ 200 minimum ³ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´³ IC [1] ³ 200 minimum - 700 maximum ³ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´³ II ³ 1000 minimum ³ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´³ IIB ³ 200 minimum - 1000 maximum ³ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ[1] Coating weights over 700 mg/ftÀ2Ù may be used if specified inthe contract or purchase order (see 6.1.2 and 6.2).3.7.1.2 Corrosion resistance. After exposure to the salt spray test specified in4.5.3, specimens shall be visually examined to determine that all of the following conditions are met:a. Test specimens shall show no more than a total of 15 isolated pits(see 6.19), none larger than 0.031 inch in diameter, in a total of 150 square inches of test area grouped from five or more test pieces. Areas within 0.062 inch from identification markings, edges and electrodecontact marks remaining after processing shall be excluded.b. Test specimens shall show no more than 5 isolated pits, none larger than0.031 inch in diameter, in a total of 30 square inches from one or more test pieces. Areas within 0.062 inch from identification markings,edges and electrode contact marks remaining after processing shall beexcluded.c. In addition to the requirements in (a) and (b) above, Type I and IBtest specimens shall not exhibit patchy dark gray areas (spots, streaks, or marks).3.7.1.3 Light fastness resistance. Class 2, dyed anodic coatings, shallshow no more fading or discoloration than would be equivalent to a Delta (E) value of 3 when subjected to the light fastness resistance test (see 4.5.4), unless otherwise specified in the contract or purchase order (see 6.2). Light fastness resistance shall be determined only when specified in the contract, purchase order or applicable drawing (see 6.2).3.7.1.4 Paint adhesion. When tested in accordance with4.5.6, no intercoat separation shall occur between the paint system and the anodic coating or between the anodic coating and the base metal. Paint adhesion shall be determined only when specified in the contract, purchase order or applicable drawing (see6.2).3.7.2 Type III coatings.3.7.2.1 Thickness of coating. Unless otherwise specified in the contract, purchase order, or applicable drawing (see 6.2), the nominal thickness of the coating shall be 0.002 inch (2 mils) (see 6.16, 6.17 and 6.10 through 6.10.5). Unless otherwise specified, the thickness of the coating shall not vary by more than +/- 20 percent for coatings up to 0.002 inches thick (2 mils) when testedin accordance with 4.5.1. Coatings over 0.002 inches (2 mils) shall not vary3.7.2.1.1 Weight of coating. The coating weight may be determined in lieu of the coating thickness (see 3.7.2.1), at the option of the procuring activity. Unsealed Type III coatings shall have a minimum coating weight of 4320 milligrams per square foot for every 0.001 inch of coating when tested in accordance with4.5.2 (see6.2).3.7.2.2 Abrasion resistance. When tested in accordance with4.5.5, unsealed Type III coatings shall provide a hard abrasion resistant finish as specified herein (see6.17). The anodic coating shall have a maximum wear index of3.5mg/1000 cycles on aluminum alloys having a copper content of 2 percent or higher (see 6.13). The wear index for all other alloys shall not exceed 1.5mg/ 1000 cycles.3.8 Sealing.3.8.1 Types I, IB, IC, II, and IIB. All Types I, IB, IC, II and IIB anodic coatings shall be completely sealed, unless otherwise specified in the contract, purchase order or applicable drawing (see 6.2). They shall be sealed in accordance with 3.8.1.1 or 3.8.1.2, as applicable. If wetting agents are used they shall be of the non-ionic type.3.8.1.1 Class 1. When class 1 is specified, sealing shall be accomplished by immersion in a sealing medium such as a 5 percent aqueous solution of sodiumor potassium dichromate (pH 5.0 to 6.0) for 15 minutes at 90 deg. C to 100 deg.C (194 deg. F to 212 deg. F), in boiling deionized water, cobalt or nickel acetate, or other suitable chemical solutions (see 6.15).3.8.1.2 Class 2. When class 2 is specified, sealing shall be accomplished after dyeing by immersion in a sealing medium, such as a hot aqueous solution containing 0.5 percent nickel or cobalt acetate (pH 5.5 to 5.8), boiling deionized water, duplex sealing with hot aqueous solutions of nickel acetate and sodium dichromate (see 6.11), or other suitable chemical solutions.3.8.2 Type III. Type III coatings shall not be sealed where the main function of application is to obtain the maximum degree of abrasion or wear resistance. Where Type III coatings are used for exterior non-maintained applications requiring corrosion resistance but permitting reduced abrasion resistance, the contract or purchase order shall specify that sealing is required. Sealing for such Type III coatings shall be accomplished by immersion in a medium, such as boiling deionized water, in a hot aqueous 5 percent sodium dichromate solution, in a hot aqueous solution containing nickel or cobalt acetate or other suitable chemical solutions (see 6.2). When Type III coatings are provided unsealed, parts shall be thoroughly rinsed in cold, clean water and dried after anodizing.3.9 Dimensions of coated articles. Articles or parts shall comply with the dimensional requirements of the applicable drawings after application of the anodic coating (see 6.10.1). (For interference in close fits of parts or assemblies see 6.10.5).3.10 Toxicity. The coatings and electrical/chemical processes used to develop these anodic coatings shall have no adverse effect on the health of personnel when used for their intended purposes. Questions pertinent to this effectshall be referred by the contracting activity to the appropriate departmental medical service who will act as an advisor to the contracting agency.73.11 Painting/coating. Painting/coating operations shall be performed as soon as practical after the anodizing process on clean coatings. If parts require storage prior to painting/coating, they shall be stored in a manner that will avoid contamination. If the parts become contaminated, they shall be cleanedin a manner that will not be detrimental to the anodic coating or the basis metal, (see 6.3).3.12 Dyeing or coloring. Anodic coatings shall not be allowed to dry before dyeing or coloring. Items to be dyed or colored should be preferably coated by the Type II anodizing treatment (see 6.12). Dyed or colored coatings shall not be allowed to remain in rinse waters for more than 5 minutes before sealing.3.13 Workmanship. Except for touch up areas in accordance with 3.3.4 and as noted below, the applied anodic coating shall be continuous, smooth, adherent, uniform in appearance, free from powdery areas, loose films, breaks, scratches and other defects which will reduce the serviceability of anodized parts or assemblies. Differences in anodic coating appearance resulting from inherent base metal differences in a component such as the presence of welds, components containing cast and machined surfaces, and differences in grain size within a forging shall not be cause to reject the anodic coating unless otherwise specified in the contract or purchase order (see 6.2). Slight discolorationfrom dripping or rundown of the sealing solution from designed crevices in a component shall be allowed.3.13.1 Contact marks. The size and number of contact marks shall be at a minimum consistent with good practice (see 6.14). If a specific location for contact marks is desired, the location shall be specified on the contract or purchase order (see 6.2).4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Exceptas otherwise specified in the contract or purchase order, the contractor mayuse his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forthin the specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements.4.1.1 Responsibility for compliance. All items must meet all requirements of Section 3. The inspection set forth in this specification shall become a part of the contractor's overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, thisdoes not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. 4.2 Classification of inspection. The Inspection requirements specifiedherein are classified as follows:8。
铝阳极氧化MIL-A-8625F标准中文版
铝阳极氧化MIL-A-8625F标准中文版时间: 2011-4-19 14:49:28/ 作者: 青岛精良机械有限公司铝阳极氧化MIL-A-8625F标准中文版美国军事标准铝和铝合金的阳极氧化膜此标准由由美国国防部所有部门和科室批准使用1.范围1.1范围本标准包括非建筑用途的铝和铝合金的6类和2级电解生成的阳极氧化膜的要求（见6.1）。
1.2分类本标准所列阳极氧化膜的类别和级别如下：1.2.1分类Ⅰ类- 铬酸阳极氧化，在铬酸槽生成的常规氧化膜（见3.4.1）ⅠB类- 铬酸阳极氧化，低电压工艺，22±2V（见3.4.1）ⅠC类- 非铬酸阳极氧化，应用非铬酸的配方生成的Ⅰ和ⅠB类氧化膜（见3.4.1和6.1.2）Ⅱ类- 硫酸阳极氧化，在硫酸槽生成的常规氧化膜（见3.4.2）ⅡB类- 硫酸阳极氧化薄膜，应用非铬酸的配方生成的Ⅰ和ⅠB类氧化膜（见3.4.1和6.1.2）Ⅲ类- 硬质阳极氧化膜（见3.4.3）1.2.2级别1级- 不染色（见3.5）2级- 染色（见3.6）2.适用文件2.1政府文件2.1.1规范和标准下面的规范和标准构成本标准的组成部分。
（此处有删节）规范军事规范MIL-P-23377 耐化学和溶剂腐蚀的环氧聚酰胺涂层，MIL-C-81706 铝和铝合金的化学转化膜MIL-P-85582 水性环氧树脂涂层联邦规范QQ-A-250/4 2024铝合金的板和薄板标准联邦标准FED-STD-141 油漆，清漆，硝基漆和相关材料：取样和测试方法。
FED-STD-151 金属：测试方法军事标准MIL-STD-105 取样程序和质量检查表2.2非政府出版物下面的规范和标准构成本标准的组成部分。
（此处有删节）美国试验和材料学会(ASTM)ASTM B 117 盐雾试验方法ANSI/ASTM B 137 铝和铝合金的阳极氧化膜的重量测试ASTM B 224 利用涡流仪测试铝氧化膜厚度，以及其它非磁性材料上的非导电层的厚度 ASTM D 822 测定油漆，清漆，硝基漆和其它产品的曝光和曝水仪（碳-电弧型）的标准使用方法ASTM D 2244 不透明材料色差的仪器测试ASTM G 23 有水和无水的非金属材料曝光测试的曝光仪（碳-电弧型）的标准使用方法 ASTM G 26 有水和无水的非金属材料曝光测试的曝光仪（氙-电弧型）的标准使用方法2.3优先程序在本标准和所引用的参考文件有矛盾时，本标准具有优先权，但是本标准不能超越现行的相关法律和法规。
氧化加工分类及标准,阳极氧化与化学导电氧化简易区别
氧化加工分为阳极氧化加工以及化学导电氧化加工，阳极氧化，就是一种电解氧化过程，是铝及其合金在相应的电解液和特定的工艺条件下，由于外加电流的作用在铝表面形成一层氧化膜的过程。
而化学导电氧化是纯化学反应，通过氧化溶液在工件表面形成一层氧化膜。
阳极氧化加工主要有MIL-8625F标准：
1.分类及标准所列阳极氧化膜的类别和级别如下:
1.1分类
I类一铬酸阳极氧化.在铬酸槽生成的常规氧化膜
IB类一铬酸阳极氧化，低电压工艺，2212V
IC类一非铬酸阳极氧化，应用非铬酸的配方生成的I和IB类氧化膜
II类一硫酸阳极氧化，在硫酸槽生成的常规的氧化膜
IIB类一硫酸阳极氧化膜，应用非铬酸的配方生成的I和IB类氧化膜
III类一硬质阳极氧化膜
1.2级别
1级-不染色
2级-染色
化学导电氧化加工主要有MIL-DTL-5541F标准：
1.分类.化学转换涂层分为以下类型和级别.
1.1类型：化学转换涂层分为以下类型
型号I-成分包含六价铬。
型号II-成分不包含六价铬。
1.2级别：铝制品和铝合金制品通过化学反应形成的保护涂层的材料，分为以下级别
Class 1A级别1A-用于最大防腐蚀、上漆或未上漆的防护涂层
Class 3级别3-用于电阻值较低要求的防腐蚀涂层
氧化加工就找银华鑫！。
STD MIL-A-8625F 铝阳极氧化中文版
MILITARY SPECIFICATION军用规范ANODIC COATINGS FOR ALUMINUM AND ALUMINUM ALLOYS铝和铝合金的阳极氧化涂层This specification is approved for use by all Departments and Agencies of the Department of Defense.本规范可以用于国防部的所有部门及机构。
1. SCOPE 范围1.1 Scope. This specification covers the requirements for six types and two classes of electrolytically formed anodic coatings on aluminum and aluminum alloys for non-architectural applications (see 6.1).1.1范围本标准包括非建筑用途的铝和铝合金的6类和2级电解生产的阳极氧化膜的要求(见6.1)1.2 Classification. The anodic coating Types and Classes covered by this specification are as specified herein (see 6.2 and6.21):1.2 分类本标准所列阳极氧化膜的类型和级别如下：1.2.1 Types类型Type I- Chromic acid anodizing, conventional coatings produced from Chromic acid bath (see 3.4.1)I 类---铬酸阳极氧化，在铬酸槽生成的常规氧化膜(见3.4.1)Type IB- Chromic acid anodizing, low voltage process, 22 ± 2V,(see 3.4.1)IB类---铬酸阳极氧化，低电压工艺，22±2V(见3.4.1)Type IC- Non-chromic acid anodizing, for use as a non-chromate alternative for Type I and IB coatings (see 3.4.1 and 6.1.2)IC类---非铬酸阳极氧化，应用非铬酸的配方生成的I和IB类氧化膜(见3.4.1)和(6.1.2)Type II- Sulfuric acid anodizing, conventional coatings produced fromsulfuricacid bath (see 3.4.2)II类---硫酸阳极氧化，在硫酸槽生成的常规的氧化膜(见3.4.2)Type IIB- Thin sulfuric acid anodizing, for use as a non-chromate alternative for Type I and IB coatings (see 3.4.2 and 6.1.2)IIB类---硫酸阳极氧化膜，应用非铬酸的配方生成的I和IB类氧化膜(见3.4.1和6.1.2)Type III- Hard Anodic Coatings (see 3.4.3)III类---硬质阳极氧化膜(见3.4.3)1.2.2 Classes.等级Class 1 - Non-dyed (see 3.5.)1级-无染色(见3.5)Class 2 - Dyed (see 3.6.)2级-染色的(见3.6)Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should bead dressed to: Commanding Officer, Naval Air Warfare Center Aircraft Division Lakehurst, CodeSR3, Lakehurst, NJ 08733-5100, by using the Self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter有用备注(建议书、添加、删除)及任何相应资料都可以用于本文件的改进，可以将资料通过本文件末尾的标准化文件改进策划书(DD 格式1426)或信件的形式发给：新泽西08733-5100，莱克赫斯特，代码SR3，莱克赫斯特海军空战中心航空分部。
MIL-A-8625F 铝和铝合金阳极氧化膜
NOT MEASUREMENTSENSITIVEMIL-A-8625FAMENDMENT 115 September 2003MILITARY SPECIFICATIONANODIC COATINGS FOR ALUMINUM AND ALUMINUM ALLOYS This amendment forms a part of MIL-A-8625F, dated 10 September 1993, and is approved for use by all Departments and Agencies of the Department of Defense.PAGE 22.1.1, under SPECIFICATIONS, MILITARY: Delete “MIL-C-81706 – Chemical Conversion Materials for Coating Aluminum and Aluminum Alloys.”PAGE 33.3.1.2, line 7: Delete “IA…” and substitute “IB.”PAGE 43.3.1.2: Change paragraph number to “3.3.1.3.” In line 4, delete “IA” and substitute “IB.”PAGE 5Add: “3.4.2.2 Photosensitized (identification) nameplates. When type II anodic coatings are specified for use in photosensitized nameplates, oxalic acid anodizing may be used in lieu of sulfuric acid anodizing. If oxalic acid anodizing is used, the resultant coating shall meet the requirements of this specification for type II anodic coatings. If copy and background color are added to photosensitive nameplates, silver compounds or dyes shall be used. Unprocessed photosensitive aluminum shall be classified as class 1. Nameplates made from photosensitive aluminum shall be classified as class 2.”AMSC N/A 1 of 3 AREA MFFP DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.PAGE 63.7.1.2c: Delete and substitute:“c. In addition to the requirements in a and b above, types I and IB test specimens that exhibit large areas of gross discoloration (dark grey areas) shall meet the following additional requirement. The total number and per panel number of pits used to verify that the requirements of a and b above are met shall be determined by adding the number of pits found with the unaided eye to the number of pits found in the areas of gross discoloration determined when examined at a magnification of 10X. This requirement does not apply to areas of slight discoloration or fading such as those areas that may result from chromate leaching during salt spray exposure.”PAGE 9TABLE II: Add “2/ III” to column 2, row 3, Applicable type I, IB, IC, II, IIB.Add the following footnote below the table “2/ Type III coatings shall be tested for corrosion resistance only when it is specified that the coating is sealed.”PAGE 104.3.3.2.3: Delete and substitute: “4.3.3.2.3 Test specimens for corrosion and light fastness resistance. Corrosion resistance shall be determined on undyed and sealed production parts or specimen panels (see 4.3.3.2). When light fastness testing is specified (see 6.2), it shallbe performed on dyed and sealed (class 2) production parts or specimen panels (see 4.3.3.2). When specimen panels are used, they shall have a width of not less than 3 inches, a length of not less than 10 inches, and a nominal thickness of not less than 0.032 inch.PAGE 136.1, line 2: Delete “yipvide” and substitute “provide.”6.1.1, line 7: Change “MIL-C-81706” to “MIL-DTL-81706.”PAGE 186.16, lines 2 and 4: Change “silicone” to “silicon.”PAGE 19Delete 6.23 and substitute:“6.23 Subject term (key word) listing.AnodizingChromatesChromic acidPhosphoric acidPotassium dichromateSodium dichromateSulfuric acidCustodians: Preparing activity:Army – MR Navy - ASNavy – AS (Project MFFP-0698) Air Force – 11Review activities:Army – AR, AV, AT, CR, CR4, MINavy – OS, SHAir Force – 70, 71, 99ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³NOT MEASUREMENT³ ³ SENSITIVE ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ MIL-A-8625F10 September 1993 SUPERSEDINGMIL-A-8625E25 April 1988MILITARY SPECIFICATIONANODIC COATINGS, FOR ALUMINUM AND ALUMINUM ALLOYSThis specification is approved for use by all Departments and Agencies of the Department of Defense.1. SCOPE1.1 Scope. This specification covers the requirements for six types and two classes of electrolytically formed anodic coatings on aluminum and aluminum alloys for non-architectural applications (see 6.1).1.2 Classification. Anodic coating Types and Classes covered by this specification are as specified herein (see 6.2 and 6.21):1.2.1 TypesType I - Chromic acid anodizing, conventional coatings producedfrom chromic acid bath, (see 3.4.1)Type IB - Chromic acid anodizing, low voltage process, 22 +/- 2V,(see 3.4.1)Type IC - Non-chromic acid anodizing, for use as a non-chromatealternative for Type I and IB coatings (see 3.4.1 and 6.1.2) Type II - Sulfuric acid anodizing, conventional coatings producedfrom sulfuric acid bath, (see 3.4.2)Type IIB - Thin sulfuric acid anodizing, for use as a non-chromatealternative for Type I and IB coatings (see 3.4.2 and 6.1.2) Type III - Hard Anodic Coatings (see 3.4.3)1.2.2 Classes.Class 1 - Non-dyed (see 3.5.)Class 2 - Dyed (see 3.6.)ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿³Beneficial comments (recommendations, additions, deletions) and any ³³pertinent data which may be of use in improving this document should be ³³addressed to: Systems Engineering and Standardization Department (Code ³³53), Naval Air Engineering Center, Lakehurst, NJ 08733-5100, by using the ³³self-addressed Standardization Document Improvement Proposal (DD Form 1426)³³appearing at the end of this document or by letter. ³ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ AMSC N/A AREA MFFP DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.MIL-A-8625F2. APPLICABLE DOCUMENTS2.1 Government documents.2.1.1 Specifications, and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation.SPECIFICATIONSMILITARYMIL-C-23377 - Primer Coating, Epoxy-Polyamide, Chemical and Solvent ResistantMIL-C-81706 - Chemical Conversion Materials for Coating Aluminumand Aluminum AlloysMIL-P-85582 - Primer Coatings: Epoxy, WaterborneFEDERALQQ-A-250/4 - Aluminum Alloy 2024, Plate and SheetSTANDARDSFEDERALFED-STD-141 - Paint, Varnish, Lacquer, and Related Materials:Method For Sampling and TestingFED-STD-151 - Metals; Test MethodsMILITARYMIL-STD-105 - Sampling Procedures and Tables for Inspectionby Attributes(Unless otherwise indicated, copies of federal and military specifications and standards are available from DODSSP-Customer Service, Standardization Documents Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)2.2 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2).AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)ASTM B 117 - Method of Salt Spray (Fog) TestingANSI/ASTM B 137 - Weight of Coating on Anodically Coated Aluminum,Measurement ofASTM B 244 - Thickness of Anodic Coatings on Aluminum and ofRelated Products, Standard Practice for Operating 2ASTM D 2244 - Color Differences of Opaque Materials,Instrumental Evaluation ofASTM G 23 - Standard Practice for Operating Light ExposureApparatus (Carbon-Arc Type) With and Without Waterfor Exposure of Non-metallic MaterialsASTM G 26 - Operating Light-Exposure Apparatus (Xenon-ArcType) With and Without Water for Exposure ofNon-metallic Materials(Application for copies should be addressed to the American Society forTesting and Materials, 1916 Race Street, Philadelphia, PA 19103.)2.3 Order of precedence. In the event of a conflict between the text ofthis document and the references cited herein, the text of this documenttakes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.3. REQUIREMENTS3.1 Materials. The materials used shall be such as to produce coatingswhich meet the requirements of this specification.3.1.1 Base metal. The base metal shall be sufficiently free from surface defects, caused by machining, cutting, scratching, polishing, buffing, roughening, bending, stretching, deforming, rolling, sandblasting, vaporblasting, etching, heat treatment condition, alloy chemistry imbalanceand inclusions, that will cause test panels or parts to fail any of the requirements of this specification. The base metal shall be subject to cleaning, etching, anodizing and sealing procedures as necessary to yield coatings meeting all requirements of this specification.3.2 Equipment and processes. The equipment and processes employed shallbe such as to produce coatings which meet the requirements of this specification. Unless otherwise specified in the contract, purchase order or applicable drawing (see 6.2), process operating conditions shall be at the option of the supplier.3.3 General.3.3.1 Anodizing of parts and assemblies.3.3.1.1 Anodizing of parts. Unless otherwise specified in the contract, purchase order or applicable drawing (see 6.2), parts shall be anodized after all heat treatment, machining, welding, forming and perforating have been completed.3.3.1.2 Anodizing of assemblies. Unless otherwise specified in the contract, purchase order or applicable drawing, anodic coatings shall not be appliedto assemblies which will entrap the electrolyte in joints or recesses (components shall be anodized separately prior to assembly). When anodizing of assemblies is authorized by the contract, purchase order or applicabledrawing, the processing method used shall not result in subsequent damage tothe assembly from electrolyte entrapment (Type I or IA coatings shall be used unless another coating Type is specified). Assemblies which containnon-aluminum parts such as steel, brass or organic substances, which would be attacked by pretreatment or anodizing solutions or would prevent uniform3.3.1.2 Anodizing of complex shapes. When anodizing complex shapes which will entrap the electrolyte in recesses, the processing method used shall not result in subsequent damage to the part from electrolyte entrapment (Type I or IA coatings shall be used unless another coating Type is specified).3.3.2 Handling and cleaning. Parts shall be so handled during all pretreatments, anodizing and post treatments that mechanical damage or contamination will be avoided. Parts shall be free of all foreign substances, oxides and soils, such as greases, oil, paint and welding flux. Parts shall have oxide and other interfering films removed by the use of proper cleaning procedures so as to be clean and have water break free surfaces. Abrasives containing iron, such as steel wool, iron oxide rouge and steel wire, which may become embedded in the metal and accelerate corrosion of aluminum and aluminum alloys, are prohibited as a means of mechanical cleaning, prior to anodizing. If special cleaning requirements are required they shall be specified in the contract or order (see 6.2).3.3.3 Reflective surfaces. When specified in the contract or purchase order (see 6.2), parts fabricated to produce a highly reflective surface shall be chemically or electrochemically brightened, prior to anodic coating (see 6.9). 3.3.4 Touch up (mechanical damage and contact marks). Unless otherwise specified (see 6.2), mechanically damaged areas from which the anodic coating has been removed without damage to the part may be touched up using chemical conversion materials approved on QPL-81706 for Class 1A coatings and the applicable method of application. Touch up shall apply only to inadvertent mechanical damage such as scratch marks. For Type III coatings, touch up shall only be allowed in areas which will not be subjected to abrasion (see 6.1.1). The mechanically damaged area(s) shall not exceed 5 percent of total anodized area of the item or touch up shall not be permitted. When specified in the contract or purchase order (see 6.2), contact marks shall be touched up using the above method required for mechanical damage.3.4 Coatings. Conventional anodic coatings as specified in the contract, purchase order or applicable drawings (see 6.2), shall be prepared by any process or operation to produce the specified coating on aluminum and aluminum alloys.3.4.1 Type I, IB and IC coatings. Type I and IB coatings shall be theresult of treating aluminum and aluminum alloys electrolytically in a bath containing chromic acid to produce a uniform anodic coating on the metal surface. Type IC coatings shall be the result of treating aluminum and aluminum alloys electrolytically in a bath containing mineral or mixed mineral/ organic acids (non-chromic acid) to produce a uniform anodic coating on the metal surface. Unless otherwise specified in the contract, purchase order or applicable drawing, Type I coatings shall not be applied to aluminum alloys with a nominal copper content in excess of 5.0 percent; nominal silicon contents in excess of 7.0 percent; or when the total allowable contents of nominal alloying elements exceed 7.5 percent. Heat treatable alloys which are to receive a Type I, IB or IC coating shall be in the required temper obtained by heat treatment, such as -T4, -T6, or T73 prior to anodizing.3.4.1.1 Type IC coatings. Type IC coatings provide a non-chromate alternative to Type I and IB coatings. Unless approved by the procuring activity, substitution of a Type IC coating where Type I or IB is specified shall be prohibited.3.4.2 Type II and IIB coatings. Type II and IIB coatings shall be the result of treating aluminum and aluminum alloys electrolytically in a bath containing sulfuric acid to produce a uniform anodic coating on the metal surface. Heat treatable alloys shall be in the required temper obtained by heat treatment, such as -T4, -T6, or T73, prior to anodizing.3.4.2.1 Type IIB coatings. Type IIB coatings provide a non-chromate alternative to Type I and IB coatings. Unless approved by the procuring activity, substitution of a Type IIB coating where Type I or IB is specified shall be prohibited.3.4.3 Type III coatings. Type III coatings shall be the result of treating aluminum and aluminum alloys electrolytically to produce a uniform anodic coating on the metal surface. Type III coatings shall be prepared by any process operation to produce a heavy dense coating of specified thickness on aluminum alloys (see 3.7.2.1). Unless otherwise specified in the contract, purchase order or applicable drawing, Type III coatings shall not be applied to aluminum alloys with a nominal copper content in excess of 5 percent or a nominal silicon content in excess of 8.0 percent. Alloys with a nominalsilicon content higher than 8.0 percent may be anodized subject to approval of the procuring activity. Heat treatable alloys shall be in a temper obtained by heat treatment, such as -T4, -T6 or T73, prior to anodizing.3.5 Class 1. When class 1 is specified in the contract or purchase order, (see 6.2), the anodic coating shall not be dyed or pigmented. Any natural coloration resulting from anodic treatment with the various alloy compositions shall not be considered coloration. The characteristic color imparted by the sealing process shall also be considered as non-dyed.3.6 Class 2. When class 2 is specified in the contract or purchase order, (see 6.2), the anodic coating shall be uniformly dyed or pigmented by exposure to a solution of a suitable type dye or stain. The color on wrought alloysshall be uniform. Cast alloys may exhibit dye bleed-out or lack of color (or color uniformity) associated with the inherent porosity of the casting. The dyes and pigments used shall not be damaging to the anodic coatings.3.6.1 Dye color. When dyed or pigmented coatings are required, the colorand color uniformity requirements shall be as specified by the contract, purchase order or applicable drawing (see 6.2).3.6.1.1 Casting alloys. Dyed casting alloys may show a slight lack of color uniformity. The degree of non-uniformity that is acceptable shall be established by the procuring activity (see 6.2).3.7 Detail requirements.3.7.1 Types I, IB, IC, II, and IIB coatings.3.7.1.1 Weight of coating. Prior to dyeing or sealing, Type I, IB, IC, II, and IIB coatings shall meet the coating weight requirements of Table I when tested in accordance with4.5.2 (see6.10.6).5TABLE I. Types I, IB, IC, II, and IIB unsealed anodic coating weights.ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿³ Coating Type ³ Coating Weight (mg/ftÀ2Ù) ³ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´³ I and IB ³ 200 minimum ³ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´³ IC [1] ³ 200 minimum - 700 maximum ³ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´³ II ³ 1000 minimum ³ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´³ IIB ³ 200 minimum - 1000 maximum ³ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ[1] Coating weights over 700 mg/ftÀ2Ù may be used if specified inthe contract or purchase order (see 6.1.2 and 6.2).3.7.1.2 Corrosion resistance. After exposure to the salt spray test specified in4.5.3, specimens shall be visually examined to determine that all of the following conditions are met:a. Test specimens shall show no more than a total of 15 isolated pits(see 6.19), none larger than 0.031 inch in diameter, in a total of 150 square inches of test area grouped from five or more test pieces. Areas within 0.062 inch from identification markings, edges and electrodecontact marks remaining after processing shall be excluded.b. Test specimens shall show no more than 5 isolated pits, none larger than0.031 inch in diameter, in a total of 30 square inches from one or more test pieces. Areas within 0.062 inch from identification markings,edges and electrode contact marks remaining after processing shall beexcluded.c. In addition to the requirements in (a) and (b) above, Type I and IBtest specimens shall not exhibit patchy dark gray areas (spots, streaks, or marks).3.7.1.3 Light fastness resistance. Class 2, dyed anodic coatings, shallshow no more fading or discoloration than would be equivalent to a Delta (E) value of 3 when subjected to the light fastness resistance test (see 4.5.4), unless otherwise specified in the contract or purchase order (see 6.2). Light fastness resistance shall be determined only when specified in the contract, purchase order or applicable drawing (see 6.2).3.7.1.4 Paint adhesion. When tested in accordance with4.5.6, no intercoat separation shall occur between the paint system and the anodic coating or between the anodic coating and the base metal. Paint adhesion shall be determined only when specified in the contract, purchase order or applicable drawing (see6.2).3.7.2 Type III coatings.3.7.2.1 Thickness of coating. Unless otherwise specified in the contract, purchase order, or applicable drawing (see 6.2), the nominal thickness of the coating shall be 0.002 inch (2 mils) (see 6.16, 6.17 and 6.10 through 6.10.5). Unless otherwise specified, the thickness of the coating shall not vary by more than +/- 20 percent for coatings up to 0.002 inches thick (2 mils) when testedin accordance with 4.5.1. Coatings over 0.002 inches (2 mils) shall not vary3.7.2.1.1 Weight of coating. The coating weight may be determined in lieu of the coating thickness (see 3.7.2.1), at the option of the procuring activity. Unsealed Type III coatings shall have a minimum coating weight of 4320 milligrams per square foot for every 0.001 inch of coating when tested in accordance with4.5.2 (see6.2).3.7.2.2 Abrasion resistance. When tested in accordance with4.5.5, unsealed Type III coatings shall provide a hard abrasion resistant finish as specified herein (see6.17). The anodic coating shall have a maximum wear index of3.5mg/1000 cycles on aluminum alloys having a copper content of 2 percent or higher (see 6.13). The wear index for all other alloys shall not exceed 1.5mg/ 1000 cycles.3.8 Sealing.3.8.1 Types I, IB, IC, II, and IIB. All Types I, IB, IC, II and IIB anodic coatings shall be completely sealed, unless otherwise specified in the contract, purchase order or applicable drawing (see 6.2). They shall be sealed in accordance with 3.8.1.1 or 3.8.1.2, as applicable. If wetting agents are used they shall be of the non-ionic type.3.8.1.1 Class 1. When class 1 is specified, sealing shall be accomplished by immersion in a sealing medium such as a 5 percent aqueous solution of sodiumor potassium dichromate (pH 5.0 to 6.0) for 15 minutes at 90 deg. C to 100 deg.C (194 deg. F to 212 deg. F), in boiling deionized water, cobalt or nickel acetate, or other suitable chemical solutions (see 6.15).3.8.1.2 Class 2. When class 2 is specified, sealing shall be accomplished after dyeing by immersion in a sealing medium, such as a hot aqueous solution containing 0.5 percent nickel or cobalt acetate (pH 5.5 to 5.8), boiling deionized water, duplex sealing with hot aqueous solutions of nickel acetate and sodium dichromate (see 6.11), or other suitable chemical solutions.3.8.2 Type III. Type III coatings shall not be sealed where the main function of application is to obtain the maximum degree of abrasion or wear resistance. Where Type III coatings are used for exterior non-maintained applications requiring corrosion resistance but permitting reduced abrasion resistance, the contract or purchase order shall specify that sealing is required. Sealing for such Type III coatings shall be accomplished by immersion in a medium, such as boiling deionized water, in a hot aqueous 5 percent sodium dichromate solution, in a hot aqueous solution containing nickel or cobalt acetate or other suitable chemical solutions (see 6.2). When Type III coatings are provided unsealed, parts shall be thoroughly rinsed in cold, clean water and dried after anodizing.3.9 Dimensions of coated articles. Articles or parts shall comply with the dimensional requirements of the applicable drawings after application of the anodic coating (see 6.10.1). (For interference in close fits of parts or assemblies see 6.10.5).3.10 Toxicity. The coatings and electrical/chemical processes used to develop these anodic coatings shall have no adverse effect on the health of personnel when used for their intended purposes. Questions pertinent to this effectshall be referred by the contracting activity to the appropriate departmental medical service who will act as an advisor to the contracting agency.73.11 Painting/coating. Painting/coating operations shall be performed as soon as practical after the anodizing process on clean coatings. If parts require storage prior to painting/coating, they shall be stored in a manner that will avoid contamination. If the parts become contaminated, they shall be cleanedin a manner that will not be detrimental to the anodic coating or the basis metal, (see 6.3).3.12 Dyeing or coloring. Anodic coatings shall not be allowed to dry before dyeing or coloring. Items to be dyed or colored should be preferably coated by the Type II anodizing treatment (see 6.12). Dyed or colored coatings shall not be allowed to remain in rinse waters for more than 5 minutes before sealing.3.13 Workmanship. Except for touch up areas in accordance with 3.3.4 and as noted below, the applied anodic coating shall be continuous, smooth, adherent, uniform in appearance, free from powdery areas, loose films, breaks, scratches and other defects which will reduce the serviceability of anodized parts or assemblies. Differences in anodic coating appearance resulting from inherent base metal differences in a component such as the presence of welds, components containing cast and machined surfaces, and differences in grain size within a forging shall not be cause to reject the anodic coating unless otherwise specified in the contract or purchase order (see 6.2). Slight discolorationfrom dripping or rundown of the sealing solution from designed crevices in a component shall be allowed.3.13.1 Contact marks. The size and number of contact marks shall be at a minimum consistent with good practice (see 6.14). If a specific location for contact marks is desired, the location shall be specified on the contract or purchase order (see 6.2).4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Exceptas otherwise specified in the contract or purchase order, the contractor mayuse his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forthin the specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements.4.1.1 Responsibility for compliance. All items must meet all requirements of Section 3. The inspection set forth in this specification shall become a part of the contractor's overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, thisdoes not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. 4.2 Classification of inspection. The Inspection requirements specifiedherein are classified as follows:8。
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1993年9月10日替代旧规范MIL-A-8625E1988年4月25日铝及铝合金阳极氧化镀层的军用规范本规范经国防部各部门和机构批准使用1.范围1.1范围. 本标准包括非建筑用途的铝及铝合金的 6 个类型和 2 个等级电解生成的阳极氧化镀层的要求（见6.1）。
1.2分类. 本规范涵盖的阳极镀层类型和等级如下所述（见6.2和6.21）：2.引用文件2.1政府文件.2.1.1规范和标准. 在本文件规定的范围内，以下规范和标准构成本文件的一部分。
除非另有规定，这些文件的版本是国防部规范和标准索引（DODISS）及其补充中所列的版本，并在招标书中引用。
军用规范MIL-P-23377 -底漆涂层，环氧聚酰胺，耐化学和溶剂MIL-C-81706 -铝及铝合金涂层用化学转化材料MIL-P-85582 -底漆：环氧树脂，水性MIL-STD-105 -检验抽样程序及抽样表联邦标准QQ-A-250/4 - 2024铝合金板材FED-STD-141 -油漆、清漆和相关材料：取样和试验方法FED-STD-151 -金属试验方法（除非另有说明，联邦和军用规范和标准的副本可从DODSP客户服务处获得，标准化文件订购处，地址：宾夕法尼亚州费城罗宾斯大道700号40号楼，19111-5094）2.2非政府出版物. 在本文件规定的范围内，以下文件构成本文件的一部分。
国防部采用招标书中引用的文件版本。
除非DODISS中未列出的文件为招标文件（见6.2）。
.美国材料试验协会（ASTM）ASTM B117 -盐雾试验方法ASTM B137 -铝上阳极镀层重量的测量ASTM B244 -用涡流仪测量铝和其他非磁性基体金属的阳极镀层厚度ASTM D822 -涂料、清漆和相关产品试验用光和水暴露装置（碳弧型），操作标准实施规程ASTM D2244 -不透明材料的色差，仪器评价ASTM G23 -非金属材料曝光用曝光装置（碳弧型）的操作规程ASTM G26 -非金属材料曝光用有水和无水的操作曝光装置（氙弧型）（副本的申请应寄往美国材料试验协会，地址：1916 Race Street，Philadelphia，PA 19103。
）2.3优先次序. 如果本规范文本与本文引用的参考文献之间存在冲突，则以本规范文本为准。
但是，除非获得特定豁免，否则本规范中的任何内容均不得取代适用的法律和法规。
3.要求3.1原材料. 所用材料应能生成符合本规范要求的镀层。
3.1.1基材. 基材应无因机械加工、切割、刮伤、抛光、粗化、弯曲、拉伸、变形、轧制、喷砂、蒸汽喷砂、蚀刻、热处理条件、合金化学不平衡和杂质等引起的表面缺陷，这些缺陷会导致按本规范操作得到的镀层不符合要求。
基底金属应进行必要的清洗、蚀刻、阳极氧化和封闭程序，以形成符合本规范所有要求的镀层。
3.2设备与工艺. 所采用的设备和工艺应能生产符合本规范要求的镀层。
除非合同、采购订单或适用图纸另有规定（见6.2），工艺操作条件应由供应商选择。
3.3常规的3.3.1零件和组件的样机氧化3.3.1.1零件阳极氧化. 除非合同、采购订单或适用图纸另有规定（见6.2），零件应在完成所有热处理、机加工、焊接、成形和钻孔后进行阳极氧化处理。
3.3.1.2组件的阳极氧化. 除非合同、采购订单或适用图纸另有规定，否则阳极镀层不得应用于将电解液滞留在接头或凹槽中的组件（组件应在组装前单独阳极化）。
当合同、采购订单或适用图纸授权对组件进行阳极氧化处理时，所采用的处理方法不得因电解液截留对组件造成后续损坏（除非另有规定，否则应使用Type I型镀层）。
含有非铝零件（如钢、黄铜或有机物质）的组件，如果会受到预处理或阳极氧化溶液的侵蚀，或会阻止阳极镀层的均匀形成，则不得将其作为组件进行阳极氧化，除非非铝表面被遮蔽或电绝缘，以生成满足本规范要求的阳极氧化镀层。
3.3.1.3复杂形状的样机氧化. 当对复杂形状的阳极氧化将电解液截留在凹槽中时，所采用的加工方法不得导致随后因电解液截留而损坏零件（除非另有规定，否则应使用Type I型镀层）。
3.3.2搬运和清洗. 应在所有预处理、阳极氧化和后处理过程中小心处理零件，以避免机械损伤或污染。
零件应无任何异物、氧化物和灰尘，如油脂、油、油漆和助焊剂。
零件应采用适当的清洗程序去除氧化物和其他干扰膜，以使其干净并具有连续水膜的表面。
在阳极氧化之前，禁止使用含有铁的磨料，如钢丝绒、氧化铁胭脂和钢丝，这些磨料可能嵌入金属中，加速铝和铝合金的腐蚀。
如果需要特殊清洗要求，应在合同或采购订单中规定（见6.2）。
3.3.3光亮表面. 当承包商采购订单（见6.2）中有规定时，为产生高反射表面而制造的零件应在阳极氧化（见6.9）之前进行化学或电化学抛光处理。
3.3.4修补（机械损伤或挂位）. 除非另有规定（见6.2），否则可使用QPL-81706中批准的化学转化材料（适用于1A级镀层）和适用的应用方法修补去除阳极镀层而不损坏零件的机械损坏区域。
修补仅适用于意外的机械损伤，如划痕。
对于Type III型镀层，仅允许在不会受到磨损的区域进行修补（见6.1.1）。
机械损坏面积不得超过项目阳极氧化总面积的5%，否则不允许修补。
当合同或采购订单中有规定时（见6.2），应使用上述机械损坏所需的方法修补挂位损伤。
3.4镀层. 合同、采购订单或适用图纸（见6.2）中规定的常规阳极镀层应通过任何工艺或操作制备，以在铝和铝合金上形成规定的镀层。
3.4.1Type I, IB, IC镀层. Type I型和IB型镀层应是在含有铬酸的槽中电解处理铝和铝合金以在金属表面形成均匀阳极镀层的结果。
IC型镀层应是在含有矿物或混合矿物/有机酸（非铬酸）的槽中电解处理铝和铝合金以在金属表面形成均匀阳极镀层的结果。
除非合同、采购订单或适用图纸中另有规定，TypeI类镀层不得应用于标称铜含量超过5.0%的铝合金，标称硅含量超过7.0%的铝合金，或当额定合金元素超过7.5%的总合金含量。
Type I型、IB型或IC镀层的基材铝合金在阳极氧化前可以进行热处理进，如-T4、-T6或T73。
3.4.1.1Type IC镀层. IC型镀层是I型和IB型镀层的非铬酸盐替代品。
除非采购机构批准，否则禁止在规定了I型或IB型的地方替换IC型镀层。
3.4.2Type II和IIB镀层. II型和IIB型镀层应是在含有硫酸的槽中电解处理铝和铝合金以在金属表面形成均匀阳极镀层的结果。
在阳极氧化之前，热处理合金应处于通过热处理获得的所需状态，如-T4、-T6或T73。
3.4.2.1Type IIB 镀层. IIB型镀层是I型和IB型镀层的非铬酸盐替代品。
除非获得采购活动的批准，否则禁止在规定了I型或IB型的地方替换IIB型镀层。
3.4.3Type III 镀层. III型镀层应是电解处理铝和铝合金以在金属表面形成均匀阳极镀层的结果。
应通过任何工艺操作制备III型镀层，以在铝合金上形成规定厚度的致密镀层（见3.7.2.1）。
除非合同、采购订单或适用图纸另有规定，否则III型镀层不得应用于标称铜含量超过5%或标称硅含量超过8.0%的铝合金。
标称硅含量高于8.0%的铝合金可经采购批准进行阳极氧化。
在阳极氧化之前，热处理合金应处于通过热处理获得的状态，如-T4、-T6或T73。
3.5Class 1 等级. 当合同或采购订单中规定了Class 1级时（见6.2），阳极镀层不得染色或着色。
用各种合金成分进行阳极氧化处理产生的任何自然颜色不应视为着色。
封闭工艺赋予的特征颜色也应视为未染色。
3.6Class 2 等级. 当合同或采购订单中规定为Class 2级时（见6.2），阳极镀层应通过暴露在适当类型染料或染色剂溶液中均匀染色或着色。
锻造合金的颜色应均匀，铸造合金可能会出现与铸件固有多孔性相关的染料渗出或颜色缺乏（或颜色均匀性）。
使用的染料和颜料不得损坏阳极镀层。
3.6.1染色. 当需要染色或着色镀层时，颜色和颜色均匀性要求应符合合同、采购订单或适用图纸的规定（见6.2）。
3.6.1.1压铸铝. 染色压铸铝合金可能显示出轻微的颜色不均匀性。
可接受的不均匀度应由采购活动确定（见6.2）。
3.7详细要求3.7.1Type I, IB, IC, II和IIB镀层3.7.1.1膜重. 在染色或密封之前，应当按照4.5.2（见6.10.6）进行测试时，Type I、IB、IC、II和IIB类镀层应满足表I的镀层重量要求。
6.1.2和6.2）。
3.7.1.2耐腐蚀性. 在4.5.3规定的盐雾试验后，应目视检查样品，以确定满足下列所有条件：a.在由5个或更多试样组成的总面积为150平方英寸的试样上，应显示总共不超过15个独立腐蚀凹坑（见6.19），直径不超过0.031英寸（0.787mm）。
不包括加工后与识别标记、边缘和挂位相距0.062英寸（1.57mm）的区域。
b.试样与一个或多个试样的总面积不得超过30平方英寸，且应显示不超过5个直径不超过0.031英寸(0.787mm)的孤立腐蚀凹坑。
不包括加工后与识别标记、边缘和挂位相距0.062英寸(1.57mm)的区域。
c.除上述（a）和（b）中的要求外，Type I型和IB型试样不得出现斑片状深灰色区域（斑点、条纹或标记）。
3.7.1.3耐光性. 除非合同或采购订单另有规定（见6.2），否则染色阳极镀层的褪色或变色程度不得超过进行耐光性试验时的Delta（E）值3（见4.5.4）。
只有在合同、采购订单或适用图纸（见6.2）中规定时，才应确定耐光性。
3.7.1.4漆层附着力. 当按照4.5.6进行试验时，油漆体系与阳极镀层或阳极镀层与基材之间不得出现涂层间分离。
只有在合同、采购订单或适用图纸（见6.2）中有规定时，才能确定油漆的附着性。
3.7.2Type III镀层3.7.2.1膜厚. 除非合同、采购订单或适用图纸另有规定（见6.2），镀层的标称厚度应为0.002英寸（50.8μm）（见6.16、6.17和6.10至6.10.5）。
除非另有规定，否则当根据4.5.1进行试验时，厚度不超过0.002英寸（50.8μm）的±20%。
膜厚超过0.002英寸（50.8μm）时，测量厚度变化不得超过±0.0004英寸（10.2μm）。
典型的Type III型镀层厚度范围如表四所示。
3.7.2.1.1膜重. 镀层重量可代替镀层厚度的测定（见3.7.2.1），由采购活动选择。
按照4.5.2（见6.2）进行试验时，未封闭的Type III型镀层的最小镀层重量应为每0.001英寸4320毫克/平方英尺。
3.7.2.2耐磨性. 当按照4.5.5进行试验时，未密封的Type III型镀层应提供本文规定的耐磨表面（见6.17）。