采用单一组分铬酸盐钝化液处理化学镀Ni-P合金层获得一种超薄钝化膜.电化学测试表明,钝化处理显著提高了Ni-P合金层的耐蚀性.X-射线光电子能谱分析表明,钝化膜主要由O、Cr及Ni等元素组成,并根据Ar+离子对钝化膜的溅射速率估算出钝化膜δ约为6nm.Cr 2p精细X-射线光电子能谱谱图分析表明,钝化膜中Cr元素主要以Cr2O3和Cr(OH)3的形式存在.并对钝化膜成膜机理进行了简单探讨.
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