稀土转化膜在金属防腐方面的研究进展及应用  

Research Progress and Application of Rare-Earth Conversion Film in Metal Corrosion Protection

作　　者：狄玉丽 李辽阔 焦钰 黄海燕 何霞 罗茜 张万明 DI Yu-li;LI Liao-kuo;JIAO Yu;HUANG Hai-yan;HE Xia;LUO Qian;ZHANG Wan-ming(School of Science,Xichang University,Xichang 615000,China;School of Resource and Environment,Xichang University,Xichang 615000,China;Pengshui Miao and Tujia Autonomous County Bureau of Ecological Environment,Chongqing 409600,China)

机构地区：[1]西昌学院理学院,四川西昌615000 [2]西昌学院资源与环境学院,四川西昌615000 [3]重庆市彭水苗族土家族自治县生态环境局,重庆409600

出　　处：《材料保护》2022年第5期156-166,共11页Materials Protection

基　　金：西昌学院“两高”科研人才项目(LGLZ201918);西昌学院博士科研启动项目(YBZ202143)资助。

摘　　要：稀土转化膜因具有良好的耐腐蚀性且无毒,近几年受到越来越多的研究者关注。简要介绍了稀土转化膜的概念及成膜机理,并对稀土在黑色金属和有色金属铝、镁、锌及其合金的防腐蚀应用研究情况进行了综述。研究发现单一稀土转化膜的抗腐蚀性能相较复合稀土转化膜差,还说明了铈转化膜较其他稀土转化膜具有更好耐腐蚀性能的原因。最后指出复合稀土转化膜、稀土复合合金镀层及稀土转化膜致密化处理为未来稀土转化膜的发展方向。The rare earth conversion film has attracted more and more attention in recent years because of its good corrosion resistance and non-toxicity. The concept and film forming mechanism of rare earth conversion film were briefly introduced, and the application of rare earth in corrosion prevention for ferrous metals as well as the nonferrous metals of aluminum, magnesium, zinc and their alloys was summarized. This study found that the corrosion resistance of composite rare earth conversion film was better than that of the single rare earth conversion film. Moreover, it also explained the reason why cerium conversion film had better corrosion resistance than other rare earth conversion films. Finally, it pointed out that the composite rare earth conversion film, rare earth composite alloy coating and densification of rare earth conversion film would be the development direction.

关 键 词：稀土 金属防腐 耐蚀机理 合金 转化膜 

分 类 号：TG174.44[金属学及工艺—金属表面处理]