ISO 9227:2017 人造环境中的腐蚀试验 盐雾试验

标准编号：ISO 9227:2017

中文名称：人造环境中的腐蚀试验 盐雾试验

英文名称：Corrosion tests in artificial atmospheres — Salt spray tests

发布日期：2017-03

标准范围

ISO 9227:2017规定了在进行中性盐雾（NSS）、乙酸盐雾（AAS）和铜加速乙酸盐雾（CASS）试验以评估金属材料的耐腐蚀性时使用的仪器、试剂和程序，包括或不包括永久或临时腐蚀保护。它还描述了用于评估测试柜环境腐蚀性的方法。它没有规定试样的尺寸或类型，特定产品的暴露期，或结果的解释。相关产品规范中提供了此类详细信息。盐雾试验特别适用于检测某些金属、有机、阳极氧化物和转化涂层中的不连续性，如气孔和其他缺陷。中性盐雾（NSS）试验尤其适用于-金属及其合金，-金属涂层（阳极和阴极），-转化膜，-阳极氧化涂层，以及-金属材料上的有机涂层。醋酸盐雾（AASS）试验对于测试铜+镍+铬或镍+铬的装饰涂层特别有用。它也被发现适用于测试铝上的阳极和有机涂层。铜加速乙酸盐雾（CASS）试验可用于测试铜+镍+铬或镍+铬的装饰涂层。它也被发现适用于测试铝上的阳极和有机涂层。盐雾法都适用于检查金属材料的质量，无论是否有防腐保护。它们不用于对比试验，作为在耐腐蚀性方面对不同材料进行相互排序的方法，或作为预测长期性能的方法-试验材料的长期耐腐蚀性。

ISO 9227:2017 specifies the apparatus, the reagents and the procedure to be used in conducting the neutral salt spray (NSS), acetic acid salt spray (AASS) and copper-accelerated acetic acid salt spray (CASS) tests for assessment of the corrosion resistance of metallic materials, with or without permanent or temporary corrosion protection.It also describes the method employed to evaluate the corrosivity of the test cabinet environment.It does not specify the dimensions or types of test specimens, the exposure period to be used for a particular product, or the interpretation of results. Such details are provided in the appropriate product specifications.The salt spray tests are particularly useful for detecting discontinuities, such as pores and other defects, in certain metallic, organic, anodic oxide and conversion coatings.The neutral salt spray (NSS) test particularly applies to- metals and their alloys,- metallic coatings (anodic and cathodic),- conversion coatings,- anodic oxide coatings, and- organic coatings on metallic materials.The acetic acid salt spray (AASS) test is especially useful for testing decorative coatings of copper + nickel + chromium, or nickel + chromium. It has also been found suitable for testing anodic and organic coatings on aluminium.The copper-accelerated acetic acid salt spray (CASS) test is useful for testing decorative coatings of copper + nickel + chromium, or nickel + chromium. It has also been found suitable for testing anodic and organic coatings on aluminium.The salt spray methods are all suitable for checking that the quality of a metallic material, with or without corrosion protection, is maintained. They are not intended to be used for comparative testing as a means of ranking different materials relative to each other with respect to corrosion resistance or as means of predicting long-term corrosion resistance of the tested material.

标准预览图