CETP00.00L467全球实验室加速循环腐蚀试验

1.0 INTRODUCTION 介绍1.1 TEST SCOPE 试验范围This standard specifies an accelerated laboratory atmospheric corrosion test. The testingenvironment addressed is similar in effect to that of the salt load/ climatic part of the proving ground corrosion test procedure, CETP 00.00-R-343 and yields corresponding results. Theobjective of the test is to allow evaluation of the corrosion resistance of metals in environments where there is a significant influence of chloride ions, mainly as sodium chloride from a marine source or by winter road de-icing salt. The laboratory test provides full exposure to the salt load and humidity environment. It does not attempt to simulate other engraving factors such as mud loads, temperature stresses or wear. It serves as a general purpose atmospheric corrosion test and applies to a variety of materials, coatings, and interactions of materials, both as testspecimens or in designed components. The test can be used as a design verification method in order to (a) develop and qualify new corrosion resistant products, (b) develop new pre-treatments and finishing processes, (c) select materials and, (d) perform quality control of the final product.本标准是关于一项在实验室里加速进行的大气腐蚀试验。

本文所述的试验环境类似于《试验场腐蚀试验程序CETP00.00-R-343》中的盐负荷/环境影响部分，得出相应的结果。

试验目的在于评估金属在富含氯化物的环境中（主要是海水中的盐或冬天用于融雪的盐）的抗腐蚀性。

该实验室试验主要是将试验件完全暴露在湿润的盐负荷环境中，而非模拟其他摩擦因素如泥负荷、温度压力或磨损。

该试验主要作为一项大气腐蚀试验，适用于各种各样的材料、涂层、试样或设计零部件材料的相互作用。

该试验可作为一种验证设计的方法，用于(a)开发并验证新的抗腐蚀产品；(b)开发新的预处理和表面处理工艺；(c)选择材料；(d)对最终产品的质量控制。

The standard specifies controlled conditions for equipment and procedures to allow the test to be performed with a high degree of repeatability and reproducibility. It is designed to besuitable to run in various climate chambers, either as a fully automated procedure or withpartial manual operations.本标准说明了设备和程序的受控条件，让实验具有高度的重复性和再现性。

本标准适用于多种环境试验箱，包括全自动试验或部分手动操作的试验。

1.2 SUMMARY OF TEST CONTENT 试验内容摘要The workday test procedure consists of: 工作日的试验程序由以下几个方面组成：• A 6 h wet phase at room temperature. with intermittent exposure to salt solution (0.5% NaCl).• A 2.5 h transition phase with drying under climate control.• A 15.5 h phase with constant temperature and humidity (50︒C, 70% RH).•室温下6小时的加湿阶段，间歇曝露到0.5%的氯化钠溶液中• 2.5小时的过渡阶段，通过环境控制进行烘干•15.5小时的恒温恒湿阶段(50︒C, 70% RH)After repeating this procedure Mon-Fri a 48 h weekend phase under continued constant climate control is added.从周一到周五重复该试验程序后，在周末加入持续恒定环境控，进行48小时的试验。

1.3 COMMONALITY 共通性This is a CONTROL TEST and can be used to qualify components throughout the world. The test may be conducted at any location having the necessary equipment and facilities.Proposed revisions to this procedure must be submitted per FAP03-179.这是一项可验证世界上所有的零部件的控制试验，可在任何地方进行，只要具备所需的设备仪器。

对本试验程序的修改建议必须按FAP03-179提交。

2.0 INSTRUMENTATION 仪器The following elements are usually required to conduct the test procedure:进行试验程序一般需要以下仪器：2.1 Compressed, clean air of 4 - 6 bars for cleaning salt solution from spray nozzles, as a source forthe renewal of chamber air and for humidification, supplied by spray humidifiers.2.1 4-6 bar的干净的压缩空气，用于清理喷嘴上的盐溶液、箱内换气和喷雾加湿器进行加湿。

2.2 A low conductivity water supply (20 μS max) for humidification or evaporative sprayhumidifiers and for the preparation of salt solutions.2.2 一根低导电率的供水管（最大20 μS），用于加湿或喷雾加湿器以及准备盐溶液。

2.3 A tank for preparation and storage of salt solution or, alternatively, a system for direct on-linemixing of water and saturated NaCl solution to the actual concentration (0.5 ± 0.05% byweight)2.3 一个用于准备和存储盐溶液的水槽，或者一套直接在线按实际浓度（0.5 ± 0.05%，按重量）混合水和饱和氯化钠溶液的系统。

2.4 A conductivity meter with built-in temperature compensation for preparation and control of the0.5% NaCl salt solution (conductivity: 8.3 mS/cm + 0.80 at 20︒C). A 0.50% by weight NaClsolution is used as a calibration standard at each measurement.2.4 一个带内置温度补偿的电导仪，用于准备和控制0.5%的氯化钠盐溶液（温度为20︒C时的导电性：8.3 mS/cm + 0.80）。

一份按重量为0.50%的氯化钠溶液，作为每次测量时的校正标准。

2.5 A high quality device for independent control of temperature and relative humidity shall beaccessible. This instrument shall on a stipulated regular interval (Ref 5.4) be used forindependent monitoring and calibration of the conditions in the very test plane of the exposure chamber. The total measurement error must not exceed 0.1︒C.2.5 一套高质量的设备，用于独立控制温度和相对湿度。

该设备按照规定的时间间隔（参考5.4），独立监控和校正试验箱李的试验平面上的各项条件，测量总误差不超过0.1︒C。

2.6 Racks of inert material for support and aligned fixation of test specimens must not hamper afree air-flow around the test objects, nor collect standing wetness. The test objects in a rackmust not screen one another from the salt solution downfall and they should be exposed with the stipulated exposure angle to the spray (15- 20 degrees inclination from vertical).2.6 由惰性材料制成的夹具，用于支撑、排列和固定试样，但不得妨碍试样周围的空气流通，不得累积水分。