MIL-DTL-5541F铝和铝合金表面化学防护涂层

MIL-DTL-5541F
11 July 2006 2006年7月11日
SUPERSEDING 替代
MIL-C-5541E
30 November 1990 1990年11月30日
DETAIL SPECIFICATION
规范说明
CHEMICAL CONVERSION COATINGS
ON ALUMINUM AND ALUMINUM ALLOYS
铝和铝合金表面化学防护涂层
This specification is approved for use by all Departments and Agencies of the Department of Defense.
该规范适用于美国国防部所有部门和机构
1. SCOPE
1.范围
1.1Scope. This specification covers chemical conversion coatings formed by the reaction
of chemical conversion materials with the surfaces of aluminum and aluminum alloys 1.1范围. 该规范适用于铝制品和铝合金表面由于化学材料反应而形成的防护涂层。

1.2Classification. The chemical conversion coatings are of the following types and
classes.
1.2分类.化学转换涂层分为以下类型和级别.
1.2.1Types. The chemical conversion coatings are of the following types (see 3.1):
1.2.1型号.化学转换涂层分为以下类型（见3.1）：
Type I – Compositions containing hexavalent chromium.
型号I-成分包含六价铬。

Type II – Compositions containing no hexavalent chromium.
型号II-成分不包含六价铬。

1.2.2Classes. The materials, which form protective coatings by chemical reaction with
aluminum and aluminum alloys, are of the following classes (see 6.1 and 6.4). 1.2.2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（见6.1和6.4）
Class 1A - For maximum protection against corrosion, painted or unpainted.
级别1A-用于最大防腐蚀、上漆或未上漆的防护涂层
Class 3 - For protection against corrosion where low electrical resistance is required
级别3-用于电阻值较低要求的防腐蚀涂层
2.APPLICABLE DOCUMENTS
2. 应用文件
2.1General. The documents listed in this section are specified in sections 3 or 4 of
this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples.
While every effort has been made to ensure the completeness of this list,
document users are cautioned that they must meet all specified requirements of documents cited in sections 3 or 4 of this specification, whether or not they are listed.
2.1 概述.该部分所列文件在标准的3或4部分做过说明。

该部分没有包括在本标准其他部分所引用的文件或推荐的附加信息以及文中所举例子。

为了尽量满足该列表的完整性，文件使用者被要求必须满足3、4部分所引用文件的一切要求，不管其是否出现在列表中。

2.2 Government documents.
2.2 政府文件
2.2.1. 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 are those cited in the solicitation or contract.
2.2.1 规范与标准。

以下规范和标准形成该文件的扩展规范。

除非另行说明，该文件的条款将被引用在招标和合同文件中。

FEDERAL STANDARDS 联邦标准
FED-STD-141 - Paint, Varnish, Lacquer and Related Materials: Methods of Inspection, Sampling and Testing
FED-STD-141 –油漆、清漆、漆器和相关材料：检测方法、采样和测试
DEPARTMENT OF DEFENSE SPECIFICATIONS
国防部规范
MIL-PRF-23377 - Primer Coatings: Epoxy, High-Solids
MIL-PRF-23377 –底漆涂层：环氧树脂、高固体
MIL-DTL-81706 - Chemical Conversion Materials for Coating Aluminum and Aluminum Alloys
MIL-DTL-81706 –用于铝制品和铝合金的化学转换材料涂层
MIL-PRF-85582 - Primer Coatings: Epoxy, Waterborne
MIL-PRF-85582 –底漆涂层：环氧树脂、水性
(Copies of these documents are available online at /quicksearch or or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.这些文件的复印件可在
网上获得，网址：/quicksearch 或，或通过从标准文件订单获得，地址：费城，4D大厦，700 Robbins大街，PA 19111-5094.)
2.3Non-Government publications. The following documents form a part of this
document to the extent specified herein. Unless otherwise specified, the issues of
these documents are those cited in the solicitation or contract.
2.3 非政府出版物。

以下规范和标准形成该文件的扩展规范。

除非另行说明，该文件的条款将被引用在招标和合同文件中。

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) INTERNATIONAL
美国国家测试与标准协会（ASTM）国际
ASTM-B117 - Salt Spray (Fog) Apparatus, Operating. (DoD adopted)
ASTM-B117 –盐雾设备，操作（DoD采用）
ASTM-D3359 - Adhesion By Tape Test, Measuring. (DoD adopted)
ASTM-D3359 –胶带粘性测试，测试（DoD采用）
(Copies of these documents are available from ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or . 该文件复印件可从ASTM国际协会获得，地址：100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or .).
MIL-DTL-5541F
AMERICAN SOCIETY FOR QUALITY (ASQ) 美国质量协会（ASQ）
ASQ-Z1.4 - Procedures, Sampling and Tables for Inspection by
ASQ-Z1.4 –程序、采样和列表的属性检测
(Copies of this document are available from American Society for Quality, 600 North Plankinton Ave., Milwaukee, WI 53203 or . 该文件复印件可从ASTM国际协会获得，地址：600 North Plankinton Ave., Milwaukee, WI 53203 or . )
SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) INTERNATIONAL
国际汽车工程师协会（SAE）
SAE-AMS4027 - Aluminum Alloy, Sheet and Plate, 1.0Mg-0.60Si-0.28Cu- 0.20Cr, (6061; -T6 Sheet, -T651 Plate) Solution and Precipitation Heat Treated. (DoD adopted)
SAE-AMS4027 –铝合金，板材，1.0Mg-0.60Si-0.28Cu- 0.20Cr, (6061; -T6 板, -T651 板)，热处理解决方法和沉淀。

（DoD采纳）
SAE-AMS4037 - Aluminum Alloy, Sheet and Plate, 4.4Cu-1.5Mg-0.60Mn, (2024; -T3 Flat Sheet; -T351 Plate) Solution Heat Treated. (DoD adopted)
SAE-AMS4037 -铝合金，板材，4.4Cu-1.5Mg-0.60Mn, (2024; -T3 扁才; -T351 板)热处理解决方法。

（DoD采纳）
(Copies of these documents are available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or .该文件复印件可从国际汽车工程师协会获得，地址：400 Commonwealth Drive, Warrendale, PA 15096-0001 or .)
2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.
2.4 优先原则。

当该标准文本与引用文件发生冲突时，优先选择文本文件。

但是，除非有特殊说明，该文件不得取代应用法律和规则。

3. REQUIREMENTS
3.要求
3.1 Materials. If no material type is specified type I shall be used. Unless otherwise specified in the contract or order, substitutions of either type I for type II, or type II
for type I coatings are not permitted. The materials used to produce a chemical conversion coating shall be approved for the selected type, class, form, and application method in accordance with the qualification requirements of
MIL-DTL-81706 and shall have been accepted for listing on the applicable qualified products list (see 6.5). Replenishing chemicals, such as fluorides, added to a bath to maintain its efficiency, shall not degrade the performance of the coating being applied.
3.1材料。

除非在合同和订单中另行规定，当没有相对应型号I的材料可以被使用
时，不允许采用型号II代替型号I的材料或型号I的材料代替型号II。

根据
MIL-DTL-81706的要求以及应用高质量产品列表（见6.5）中的规定，对于产生化学防腐涂层的材料必须在选型、级别、形状及应用方法等方面得到许可。

对于化学添加剂，如为了保持生产效率的添加物——氟化物，不得在涂层被产生时降低涂层的生成级别。

3.2 Cleaning. Prior to coating, the base metal shall be mechanically or chemically cleaned such that a water break-free surface is obtained after rinsing (see 6.6). Abrasives containing iron such as steel wool, iron oxide, rouge, or steel wire are prohibited for all cleaning operations. Treated parts that have become soiled shall be
cleaned with materials that will remove the soil without damaging the base metal, the part, or the conversion coating. If the coating is damaged, the damaged area shall be recleaned and recoated or the part shall be rejected.
3.2 清洁。

在产生涂层前，基层金属应该进行机械或化学清理，这样在漂洗后可在金属表面形成均匀水覆盖层（见6.6）。

含有铁元素的摩擦物，如钢丝绒布、铁氧体、糙布以及钢丝刷禁止用在清洁过程中。

当清理附着有泥土的部分时，不允许在清理过程中对基层金属或防腐涂层造成损伤。

如果涂层被损伤，损害部分应当重新清洁并再次上涂层，否则产品将被拒收。

3.3 Application. Unless an application method is specified in the contract or order (see 6.4), the chemical conversion coating shall be applied nonelectrolytically by spray, brush, or immersion after all heat treatments and mechanical operations such as forming, perforating, machining, brazing, and welding have been completed (see 6.11 and 6.14). Assemblies containing nonaluminum parts that may be attacked, embrittled, or damaged in any way by the conversion coating process shall not be coated as assemblies unless the nonaluminum parts are masked.
3.3 应用。

除非在合同或订单中另行规定应用方法（见6.4），在所有热处理以及机加工操作（成型、射孔、机加工、打磨和焊接）完成之后（见6.11和6.14），化学防腐涂层应当被应用在由于喷雾、浸泡和涂刷时的非电解状态下。

装配时，包含非铝制品部件的部分（可能会在防腐涂层产生过程中受到冲击、脆化或损坏）不应当被上涂层（除非该部分要求被覆盖）。

3.4 Touch-up. If specified in the contract or order, mechanically damaged areas from which the coating has been removed shall be touched up or rejected. The damaged areas shall be touched up with MIL-DTL-81706 material approved on QPL-81706 for the applicable type, class, form, and method. The area to be touched up shall be not greater than 5 percent of the total item surface area (see 6.4 and 6.17).
3.4 修补。

如果在合同和订单中有规定，由于机械损伤而产生的涂层损坏部分应当被修补否则将被拒收。

损坏部分的修补参见MIL-DTL-81706材料许可
QPL-81706应用型号、形状和方法。

修补面积不得超过单个产品总表面积的5%。

（见6.4和6.17）
3.5 Appearance. The chemical conversion coating shall be continuous in appearance and visibly discernible in daylight. It shall be free from areas of powdery or loose coating, voids, scratches, flaws, and other defects or damages which reduce the serviceability of parts or are detrimental to the protective value and paint bonding characteristics. The size and number of contact marks shall be minimal, consistent with good practice. If specified in the contract or order, contact marks shall be touched up with MIL-DTL-81706 material approved on QPL-81706 for the applicable type, class, form, and method to prevent localized corrosion (see 6.4 and 6.8).
3.5 外观。

化学防腐涂层应当在日光下保持完整性和清晰性。

任何可能会损坏部件实用性或降低防腐水平以及油漆表面性能的缺陷，如粉末化、漏涂、擦刮、裂痕以及空泡都不允许发生。

合同标识的尺寸以及数字应当最小化，保持最佳实用性。

如在合同以及订单中有规定，合同标识应根据MIL-DTL-81706材料许可
QPL-81706应用型号、形状和方法来进行润色。

3.6 Performance characteristics.
3.6 性能特点
3.6.1 Corrosion resistance. At the end of 168 hours of exposure to the 5 percent salt spray test specified in
4.4.1, test specimens (see 4.2.2) treated with the applicable class of coating shall meet the following corrosion resistance requirements (see 6.14): 3.6.1 防腐性能。

根据4.4.1测试规定，经过168小时暴露在5%的盐雾喷射实验后，涂层应用级别处理的测试样本（见4.2.2）应当满足一下防腐性能要求（见6.14）：
a. No more than 5 isolated spots or pits (see 6.9), none larger than 0.031 inch in diameter, per test specimen. Areas within 0.25 inch from the edges, identification markings, and holding points during processing or salt spray exposure shall be excluded. Loss of color shall not be cause for rejection.
a.每个测试样本那个有超过5个绝缘点或坑（见6.9），每个直径不超过0.031英寸。

从边缘开始的0.25英寸范围之内，在涂层处理或暴露于盐雾中时应避开识别标志、抓握点。

失色不应成为拒收理由。

b. No more than 15 isolated spots or pits, none larger than 0.031 inch in diameter, on the combined surface area of all five test specimens, subjected to the salt spray test. b.所有5个测试样本（盐雾试验）总体表面不得超过15个独立点坑，每个直径不得超过0.031英寸。

3.6.2 Paint adhesion (wet tape). When the production paint system (6.13) or the paint system specified in
4.2.2.1.1 is applied to the applicable test specimens (see 4.2.2), no intercoat separation shall occur between the paint system and the conversion coating, or between the conversion coating and the base metal, when tested in accordance with 4.4.2 (an adhesion rating of 4A or better according to ASTM-D3359 Procedure A) (see 6.12). If the conversion coated parts do not require painting for end use, the paint adhesion test may be omitted if specifically authorized by the acquisition activity (see 6.4).
3.6.2 油漆附着性能（湿性胶带）。

当产品油漆系统（6.13）或
4.2.2.1.1规定的油漆系统应用在测试样本中时（见4.2.2），根据4A中4.4.2（附着率）或根据ASTM-D3359程序A（见6.12），在油漆系统和防腐涂层之间，或者防腐涂层和基层金属之间不应产生中间涂层间隔。

如果防腐涂层部分没有在最后被要求喷漆。

则在采集性活动中经过官方许可，附着性测试可被省略（见6.4）。

3.7 Electrical contact resistance of class 3 coatings. Electrical contact resistance testing shall be as specified in the contract or order (see 6.4). The test method, frequency of testing, and required resistance values shall be specified by the acquisition activity to meet the needs of a particular application (see 6.1.2.1).
3.7 涂层级别3的接触电阻性能。

在合同或订单中应当规定接触电阻性能测试（见6.4）。

在采购活动中应规定测试方法、测试频率和电阻性能要求，以满足特殊
应用的需求（见6.1.2.1）
3.8 Chemical analysis of the conversion solution. Chemical analysis of the conversion solution shall consist of concentration, pH, and temperature evaluations to determine that the bath is within the ranges specified by the chemical manufacturer (see 6.11).
3.8转换方案的化学分析。

转换方案的化学分析应包括浓度、PH值、温度评测以决定电解槽是在化学制造商规定范围之内（见6.11）。

3.9 Workmanship. The chemical conversion coatings covered by this specification shall be produced by treatments and processes that produce coated components as specified in this specification.
3.9 工艺。

该标准所涉及的化学转化涂层应当是在处理过程中产生，因此生成的涂层材料符合本规范的规定。

4.VERIFICATION 验证
4.1Classification of inspections. The inspection requirements specified herein are
classified as follows:
4.1检测分级。

对本标准的检测分级要求如下所示：
a.Process control inspection (see 4.2). 过程控制检测（见4.2）
b.Conformance inspection (see 4.3). 一致性检测（见4.3）
4.2Process control inspection.
4.2过程控制检测
4.2.1Process control tests and solution analysis. Test specimens shall be tested in
accordance with table I and 4.2.1.1. In addition to the tests in table I, solution
analysis shall be performed on all the processing solutions in the chemical
conversion line (see 3.8) to verify that the chemical concentrations are within
ranges established for optimum performance (see 6.11 and 6.14). Process
control tests are conducted to determine compliance of the chemical
conversion coatings with the requirements of this specification and are
acceptable as evidence of the properties being obtained with the equipment
and procedures employed.
4.2.1过程控制测试与解决方案分析。

测试样本应以表I和4.2.1.1节为标准进行测
试。

除了表I的测试，在所有化学转化列表中（见3.8）都要求对解决方案进行分析，以验证化学浓度在给出的最佳完成效果范围之内（见6.11和
6.14）。

过程控制测试的目的，是确定化学转化涂层与本规范要求以及在
使用设备和程序过程中所获得的特性证据接受度的一致性。

TABLE I. Process control tests.
表I 过程控制测试
4.2.1.1 Frequency of process control testing and solution analysis. Solution analysis shall at a minimum be performed once every week (see 6.15). The process control tests specified in table I shall at a minimum be conducted on a monthly basis. In addition, the interval between each monthly test shall not exceed 35 days. If production in accordance with this specification is not performed for 35 days or more, process control tests and solution analysis shall be conducted at the restart of production.
4.2.1.1过程控制测试与解决方案分析频率。

解决方案分析至少一周一次（见6.15）。

根据表I规定，过程控制测试周期要求至少以单月为基础。

此外，每个月之间的间隔不得超过35天。

如果生产中没有按照此要求完成，或超过35天完成，则过程控制测试和解决方案分析需要重新进行。

4.2.2 Process control test specimens. Test specimens used for process control testing shall be 3 inches wide, 10 inches long, with a nominal thickness of not less than
0.020-inch. The test specimens shall be processed with the hardware during an actual production run, including all pre- and post-treatment processes such as cleaning and rinsing, except as specified below. Unless otherwise specified in the contract or order (see 6.4), either of the following alloy options for the process control test specimens shall be used:
4.2.2 过程控制测试样本。

过程控制测试样本尺寸要求3英寸宽、10英寸长、平均厚度不得超过0.020英寸。

在对样本的测试过程当中，应当完全按照实际生产过程中的程序来进行，包括所有预处理和后期处理，如清洁和漂洗，如下文规定。

除非在合同和订单中另行规定（见6.4），以下在过程控制测试样本的合金材料操作应使用：
Option 1 - A set of test specimens shall be used for each alloy and temper treated during the monthly process control period.
操作1 - 每月处理控制期间的用于回火处理和每种合金的一套测试样本。

Option 2 - The test specimens shall be 2024-T3 aluminum alloy in accordance with SAE-AMS4037 for class 1A coatings and 6061-T6 aluminum alloy test specimens in accordance with SAE-AMS4027 for class 3 coatings. Aluminum alloy 2024-T3 test specimens may be used in lieu of 6061-T6 test specimens for testing class 3 coatings (see 6.10). When castings are being processed and the cleaning procedures used are detrimental to the wrought test specimens, the test specimens shall be cleaned in a proper manner (see 3.2) and the conversion coated with the castings. If the production parts are not 2024-T3 aluminum alloy and the etch or deoxidizer may be detrimental to the test specimens, the manufacturer’s recommen ded cleaning practices shall be used.
操作2 - 根据SAE-AMS4.37（适用于级别1A涂层和6.61-T6铝合金测试样本）以及SAE-AMS4027（铝合金测试样本级别3 涂层），测试样本应为2.24-T3铝合金。

2.24-T3铝合金测试样本可以应用在级别3涂层6.61-T6测试样本（见6.10）环境下。

当处理的铸件和应用的清洁流程对锻造测试样本产生有害效果时，应对测试样本采用适当的情节方法（见
3.2）并对逐渐进行转化涂层。

如果测试样本不是2.24-T3铝合金测试样本，并且蚀刻或脱氧剂可能会对样本造成损害时，应使用制造商推荐的清洁方法。

4.2.2.1 Preparation of paint adhesion specimens. Unless otherwise specified on the contract or order (see 6.4), the paint system to be used on the test specimens for adhesion testing (see 4.4.2 and 6.13) shall be the same system used for the production work (applied and cured in the same manner as the production work) or the paint system specified in 4.2.2.1.1.
4.2.2.1 样本涂料附着力准备。

除非合同或订单中另行规定（见6.4），油漆系统中测试样本的额附着性能测试（见4.4.2和6.13）应与生产中使用（生产应用同种方法）同一种系统，或依照4.2.2.1.1规定的油漆系统来完成。

4.2.2.1.1 Epoxy primer coatings. Test specimens shall be furnished with one coat of a volatile organic compound (VOC) compliant epoxy-polymide primer conforming to MIL-PRF-23377 or MIL-PRF-85582. In either case, the primer shall be applied to a dry film thickness of 0.0006 to 0.0009 inch (0.6 to 0.9 mil) and dried in accordance with the applicable primer specification before testing in accordance with 4.4.2.
4.2.2.1.1 环氧底漆涂层。

要求符合MIL-PRF-23377 或MIL-PRF-85582，测试样本应当涂上挥发性有机化合物（VOC）环氧聚酰亚胺底漆涂层。

或者在另一种情况下，根据4.4.2在测试前，依照应用底漆干燥规定，干燥底漆厚度在0.0006
到0.0009英寸之间。

4.2.3 Failure. Failure to conform to any of the process control requirements specified in table I shall result in immediate cessation of production. The reason for failure shall be determined and corrected before production resumes. All traceable and retrievable work from the last acceptable process control test to the time when the failure was determined shall be rejected, unless the work under review can be demonstrated to meet the requirements of this specification. Unless otherwise specified, parts that have been painted or incorporated into an assembly shall not be considered retrievable.
4.2.3 失败。

表I中规定的任何一种过程控制要求中的失败都将导致生产的立刻中止。

失败的原因应在生产开始前就得到确定和纠正。

除非在生产审核中工件显示符合标准规定的要求，从最后可接受过程控制测试到缺陷被确认时为止，所有可追溯和可回收工件应当被拒绝。

除非另行规定，已油漆的部件或装配进的部件不应当被考虑可回收。

4.3Conformance inspection.
4.3 一致性检测
4.3.1 Sampling. Samples for visual examinations shall be selected from each lot (see 4.3.2) of treated articles, items, parts, or components. Unless otherwise specified in the contract or order (see 6.4 and 6.18), the sampling plan and acceptance criteria shall be as specified in ASQ-Z1.4, inspection level II.
4.3.1 采样。

目测样本应从每个已处理的批次中（包括物品、单品、部件或组件）中选出（见4.3.2）。

除非合同或订单中另行规定（见6.4和6.18），采样计划和接受条件应在ASQ-Z1.4，检测级别II中进行规定。

4.3.2 Visual lot examination. Samples selected in accordance with 4.3.1 shall be visually inspected for compliance with 3.5 and 3.9. Each lot shall be inspected to ensure that the lot consists of all conversion coated items of the same type, class, form, and method, treated under the same process conditions, and submitted for acceptance at one time. Unless otherwise specified on the contract or order, the lot size shall not exceed the number of parts, articles, items, or components resulting from one day’s production (see 6.4).
4.3.2 目测抽样。

根据4.3.1，选择的样品应在目测中符合3.5和3.9。

每次抽样检测中，要保证抽样要包括在同样处理条件下的所有型号、级别、形状、方法的转化涂层单品，并一次性符合接收条件。

除非合同或订单中另行规定，抽样数目不应当超过一天生产出的部件、物品、单品或组件的数目。

4.3.3 Failure. Failure to conform to 4.3.2 shall result in rejection of the represented lot.
4.3.3 失败。

根据4.3.2，失败将导致所抽样品的拒收。

4.4. Test methods.
4.4. 测试方法
4.4.1 Corrosion resistance test. Five test specimens prepared in accordance with 4.2.2
shall be used for corrosion resistance testing. After the coating application, the test specimens shall be dried at 60 to 100 ºF (16 to 38 ºC) for 24 hours (see 6.14). The test specimens shall then be subjected to a 5 percent salt spray test in accordance with ASTM-B117 for 168 hours, except that the significant surface shall be inclined 6 ± 2 degrees from the vertical. After exposure, test pieces shall be cleaned in running water not warmer than 100 ºF (38 ºC), blown with clean, dry unheated air, and visually examined for conformance to 3.6.1. The dry unheated air for type I shall be not warmer than 100 ºF (38 ºC) and for type II shall follow the manufacturer’s recommended temperature ranges.
4.4.1 抗腐蚀性能测试。

根据4.2.2，应准备5个测试样本用于抗腐蚀性能测试。

涂层处理完成后，测试样本应在16-38摄氏度（60-100华氏度）进行24小时干燥。

根据ASTM-B117，测试样本应进行168小时的5%盐雾测试，要求有效面积保持垂直倾斜6 ± 2角度。

暴露测试完成后，测试样本应在不超过38摄氏度（100华氏度）流水下清洗，再经过干燥未加热空气吹干，根据3.6.1进行目测。

型号I样本的干燥未加热空气不得超过38摄氏度（100华氏度），型号II样本以制造商推荐温度范围为准。

4.4.2 Wet tape adhesion test. Two test specimens prepared in accordance with 4.2.2 and 4.2.2.1 shall be tested for wet tape adhesion. The test shall be conducted in accordance with FED-STD-141, method 6301, to determine conformance to 3.6.2. 4.4.2 湿胶带粘附性能测试。

根据4.2.2和4.2.2.1规定，应准备2件样本进行湿胶带粘附性能测试。

测试过程应符合FED-STD-141, 方法6301, 一致性测试3.6.2。

5. PACKAGING
5.包装
5.1 Not applicable.
5.1 未应用
6. NOTES
5注意
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.该部分包含了通用信息或解释性文件，可提供有效帮助，属于非强制性文件)
6.1 Intended use. The conversion coatings covered by this specification are intended for use, throughout the Department of Defense, on aluminum and aluminum alloy substrates that are not anodized. They are used to repair anodized coatings on aluminum. They are designated as a post treatment to ion-vapor deposition (IVD) aluminum used on many military platforms as a cadmium alternative or galvanic corrosion inhibitor. Type I and II conversion coatings provide corrosion protection on unpainted items, as well as improve adhesion of paint finish systems on aluminum and aluminum alloys. The conversion coatings covered by this specification exceed
commercially available products due to the nature of their use on aircraft.
6.1 使用途径。

该规范所包括的转化涂层主要应用于国防中未阳极氧化的铝制品和铝合金制品基层上。

用于修复铝制品的阳极氧化涂层。

是被设计用于军事中铬替代或电腐蚀抑制剂平台的离子气相沉积（IVD）后期处理。

型号I和型号II转化涂层提供了为喷漆单品的防腐保护，以及改善了铝制品和铝合金制品油漆完成系统的附着性能。

由于其航空应用的缘故，该规范涉及的转化涂层超出了商业应用产品范围。

6.1.1 Class 1A. Class 1A chemical conversion coatings are intended to provide corrosion prevention on unpainted items as well as improve adhesion of paint finish systems on aluminum and aluminum alloys. Coatings of this type may be used, for example, on tanks, tubing, and component structures where paint finishes are not required for interior surfaces but are required for the exterior surfaces.
6.1.1 级别1A。

级别1A化学转化涂层用于对未油漆单品提供防腐保护，以及改善铝制品和铝合金制品油漆完成系统的附着性能。

该类型涂层可用于如坦克、油管和结构部件上（指针对内表明没有油漆要求，而只对外表面有油漆要求的产品）。

6.1.2 Class 3. Class 3 chemical conversion coatings are intended for use as a corrosion preventive film for electrical and electronic applications where lower resistant contacts, relative to class 1A coatings, and anodic coatings in accordance with MIL-A-8625, are required (see 6.1.2.1). Coating thickness is varied by immersion time, and as a result, the same conversion material can be listed on
QPL-81706 for both classes. Because class 3 coatings are thinner they are more susceptible to corrosion than class 1A coatings. If it is required to paint areas surrounding electrical contacts, class 3 coatings improve adhesion of paint systems on aluminum and aluminum alloys.
6.1.2 级别3.级别3化学转化涂层用于针对电子和电气应用中，要求较低接触阻抗的防腐保护膜中；相对于级别1A涂层，根据MIL-A-8625，要求有阳极氧化涂层（见6.1.2.1）。

涂层厚度根据浸泡时间不同而不同，结构导致的是同样转化材料都能在两个级别的QPL-81706中列出。

由于级别3涂层更薄，它比级别1A更易受到影响。

如果在电气接触环境区域要求喷漆，级别3涂层能改善铝制品和铝合金油漆系统的附着性能。

6.1.2.1 Electrical resistance testing. When under a nominal electrode pressure of 200 psi, class 3 coatings are qualified under MIL-DTL-81706 to have a resistance not greater than 5,000 microhms per square inch as supplied and 10,000 microhms per square inch after 168 hours of salt spray exposure. In addition to the coating or coating thickness (see 6.1.2), other variables heavily influence resistance values when using the test method specified in MIL-DTL-81706 or other similar methods. The following two variables (see 6.1.2.1.1 and 6.1.2.1.2) may have a greater effect on electrical resistance values than the conversion coating thickness.
6.1.2.1 电阻抗测试。

当处于正常电极压力200psi情况下时，根据MIL-DTL-81706，级别3涂层要求符合阻抗不超过5，000microhms/每平方英寸，以及168小时暴露在盐雾下时10，000microhms/每平方英寸。

除去考虑涂层或涂层厚度（见6.1.2），
当使用MIL-DTL-81706规定的测试方法或其他类似方法时，级别3要求符合其他严重影响阻抗值变量的要求。

相对于转化涂层厚度，以下两个变量（见6.1.2.1.1和6.1.2.1.2）可能会对电阻抗值产生较大影响。

6.1.2.1.1 Surface roughness of the specimen panel. Test specimens having rough surfaces will yield lower resistance values when subjected to a contact electrode pressure due to coating fracture. This reasoning can also be applied to the contact electrode.
6.1.2.1.1 样本面板表面粗糙度。

由于涂层的损坏，对于接触电极压力，粗糙表面的测试样本将产生较低阻抗值。

该原因同样适用于接触电极。

6.1.2.1.2 Flatness of the contact electrode. If an electrode with a given surface area is not flat, the actual contact area will be lower than the theoretical value. A smaller contact area results in a higher resistance value. The same reasoning can be applied to the test specimen.
6.1.2.1.2 接触电极平坦度。

如果给出表面区域不平坦，实际接触面积将低于理论值。

更小的接触表面将导致更高的阻抗值。

该理论同样适用于测验样本。

6.2 Responsibility for inspection. Unless otherwise specified in the contract or order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or order, the contractor may use 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 forth in the specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements.
6.2 检测责任。

除非在合同或订单中另行规定，承包商应对本文件规定的检测要求（检查和测试）完成情况负有责任。

除非在合同或订单中另行规定或政府不赞成，承包商应使用己方或其他可用设备以满足检测要求的完成。

对于标准中规定的任何被认为是有必要提供供应和服务以满足早期要求的检测，政府方面有保留的权利。

6.3 Responsibility for compliance. All items must meet the requirements of section 3. The inspection set forth in this specification must become a part of the contractor’s overall inspection system or quality program. The absence of any inspection requirement in the specification will 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, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material.
6.3 符合型责任。

所有单品必须满足第3部分要求。

该标准中的检测规范必须成为承包商检测系统或质量保障程序中的一部分。

根据满足合同中的要求的规定，
规范中检测要求的任何缺失，因此造成的政府对生产或厂家供应接受形成的障碍，承包商需要对此负责。

采样检测，作为制造操作中的一部分，可以视为满足规范要求一致性的活动，但是，这并不代表授权已知缺陷材料（指明或实际存在的）的提交，也不表明政府将接受缺陷材料。

6.4 Acquisition requirements. Acquisition documents should specify the following:
6.4 获取要求。

获取要求文件应做一下规定：
a. Title, number, and date of the specification.
a.题目、编号、规范日期
b.Type and class required (see 1.2.1 and 1.2.2).
b. 型号和级别要求（见1.2.1和1.2.2）
c. Method of application, if restricted (see 3.3).
c. 在有规定情况下，应用方法（见3.3）
d. If touch-up is permitted for mechanically damaged areas (see 3.4).
d. 允许对机械损伤部位修复（见3.4）
e.Colorless coatings, if required (see 3.5).
e. 如有要求，无色涂层（见3.5）
f.If touch-up is permitted for contact marks (see 3.5)
f. 允许对接触标识修复（见3.5）
g.Omit the paint adhesion test, if permitted (see 3.6.2).
g. 如许可情况下，可忽略油漆附着性测试（见3.6.2）
h.If electrical resistance testing if required for class 3 coatings (see 3.7 and 6.1.2).
h. 如需要，对级别3涂层进行电阻抗测试（见3.7和6.1.2）
i.When electrical resistance testing is required, specify the required resistance
values, frequency of testing, and test method (see 3.7 and 6.1.2).
i. 如需进行电阻抗测试，规定要求的阻抗值、测试频率和测试方法（见3.7和
6.1.2）
j.Alloy and temper of the process control test specimens, if different than that specified in 4.2.2.
j. 如与4.2.2规定不一样时，合金和过程控制测试样本的淬火，
k.Paint finish system for treated parts, if applicable (see 4.2.2.1).
k. 如需要（见4.2.2.1），处理部件的油漆完成系统
l.Quantity required.
l. 数量要求
m.Sampling plan, if different than that specified (see 4.3.1 and 6.18).
m. 如与规定不一样（见4.3.1和6.18），采样计划
n. Lot size, if different than that specified (see 4.3.2).
n. 如与规定不一样（见4.3.2），抽样尺寸
6.5 Interchangeability. The various products approved in accordance with
MIL-DTL-81706 and listed on QPL-81706 provide equivalent coatings within each type and class. These coatings are equivalent insofar as performance of the chemical。