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电化学  2010 

电镀锌钛/锆基无铬化学转化膜的制备与耐蚀性能

, PP. 373-377

Keywords: 电镀锌,无铬钝化,钛/锆基,盐雾试验,耐蚀性能

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Abstract:

借助优化钛/锆基化学转化工艺,在碱性无氰镀锌层基体上获得了环保型的无铬转化膜,并与铬酸盐彩色钝化膜作对比.中性盐雾试验、动电位极化和电化学阻抗谱测试结果表明:钛/锆基化学转化膜出现白锈时间为96h,达到铬酸盐彩色钝化膜标准,且呈现出较低的腐蚀电流和较高的极化电阻,但钝化特性不如铬酸盐彩色钝化膜明显.

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