推荐回答（5个）
盐雾测试种类是一种用盐雾试验设备人工模拟出的盐雾环境条件测试产品或者材料抗腐蚀性能的一种环境实验。实验的严格程度在于曝露周期时间。
盐雾测试可以根据环境温度以及盐雾浓度分为4类:中性盐雾测试、醋酸盐雾测试、铜盐加快醋酸盐雾测试、交变盐雾测试。
(1)中性盐雾测试(NSS实验)是出现早目前行业应用广的一种加快腐蚀实验方法。它采用5%的氯化钠盐水溶液，溶液PH值调在中性范围(6～7)当作喷雾用的溶液。实验温度均取35℃，要求盐雾的沉降率在1～2ml/80cm.h之间。
(2)醋酸盐雾测试(ASS实验)是在中性盐雾测试的基础上快速发展起来的。它是在5%氯化钠溶液中添加一点冰醋酸，使溶液的PH值降为3左右，溶液成为酸性，后形成的盐雾也由中性盐雾成为酸性。它的腐蚀效率要比NSS实验快3倍左右。
(3)铜盐加快醋酸盐雾测试是国外新近快速发展起来的一种快速盐雾腐蚀实验，实验温度为50℃，盐溶液中添加少量铜盐—氯化铜，强烈诱发腐蚀。它的腐蚀效率大约是NSS实验的8倍。
(4)交变盐雾测试是一种综合盐雾测试，它实际上是中性盐雾测试加恒定湿热实验。它主要用于空腔型的整机产品，通过潮态环境的渗透，使盐雾腐蚀不但在产品表面产生，也在产品内部产生。它是将产品在盐雾和湿热两种环境条件下交替转换，后考核整机产品的电性能和机械性能有无变化。
盐雾测试判定方式：
通常以检测前与检测后经过外观目检或采用低倍率光学显微镜当作辨别锈蚀程度愈轻者产品的耐腐蚀能力愈强。在检测的时候会以温度、盐雾浓度、环境湿度/盐雾循环及其实验时间长短当作严格度等级区分。
l 盐雾试验分类：盐雾试验种类可以分为中性盐雾试验（NSS）、乙酸盐雾试验（AASS）、铜加速乙酸盐雾试验（CASS）。
l 适用范围：参照GB/T 10125-2021标准，不同盐雾试验的适用范围如下：
Ø 中性盐雾试验：适用于金属及其合金、金属覆盖层（阳极性或阴极性）、转化膜、阳极氧化膜、金属基体上的有机覆盖层等。
Ø 乙酸盐雾试验：适用于铜+镍+铬或镍+铬装饰性镀层，也适用于铝的阳极氧化膜和有机覆盖层等。
Ø 铜加速乙酸盐雾试验：适用于铜+镍+铬或镍+铬装饰性镀层，也适用于铝的阳极氧化膜和有机覆盖层。
实验室模拟盐雾试验可以分为四类： 中性盐雾试验、醋酸盐雾试验、铜盐加速醋酸盐雾试验、交变盐雾试验。
盐雾试验是一种主要利用盐雾试验设备所创造的人工模拟盐雾环境条件来考核产品或金属材料耐腐蚀性能的环境试验.它分为二大类,一类为天然环境暴露试验,另一类为人工加速模拟盐雾环境试验.人工模拟盐雾环境试验是利用一种具有一定容积空间的试验设备
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