中性盐雾试验(NSS:Neutral Salt Spray test)是在特定的试验箱(电镀设备)内,将含有(5士0.5)%氯化钠、pH值为6.5~7.2的盐水通过喷雾装置进行喷雾,让盐雾沉降到待测试验件上,经过一定时间观察其表面腐蚀状态。试验箱的温度要求在(35±2)℃,湿度大于95%,降雾量为1~2mL/(h·cm2),喷嘴压力为78.5~137.3kPa(0.8~1.4kgf/cm2)。
...乙酸盐雾试验(AASS)试验时间较长,但试验结果的重现性较好,且与材料实际使用的相关性较好,国外标准中多数采用中性盐雾试验(NSS)或乙酸盐雾试验(AASS)作为阳极氧化膜的耐蚀性检验。
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...键字: Cu-Ni合金;中性盐雾试验;腐蚀速率;腐蚀产物膜;选择性腐蚀[gap=1155]Key words: Cu-Ni alloy; neutral salt spray test; corrosion rate; corrosion product film; selective corrosion..
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中性盐水喷雾试验 NSS TEST
介绍了有机涂层中性盐雾试验的相关标准及其评价方法。
The standards and the comment process of neutral salt-fog test for organic coatings are introduced.
结果与失重法和中性盐雾试验法相比,有较好的一致性。
Its results have better consistency than those obtained by methods of weight loss and neutral salt spray.
涂层的耐蚀性采用中性盐雾试验和5%盐水浸润试验,并测试涂层的阳极极化曲线综合进行比较。
The corrosion resistance of the coating was measured by neutral mist of salt experiment and soaking in 5%nacl solution. Moreover, the curves of positive polarization were give...
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