无铬钝化技术利于环保,是近年来镀锌件后处理的研究热点.从成膜机理、国内外研究概况及现阶段研究存在的主要问题方面,分别介绍了镀锌层无铬钝化技术中应用前景较好的硅酸盐钝化、稀土钝化、钛盐钝化及有机硅烷钝化,指出了今后无铬钝化的研究方向:加强复合钝化研究;寻找合适的物质提高钝化膜的自愈能力;重视钝化膜及钝化液的稳定性研究.
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