锡-锌合金镀层的无铬和低铬钝化  

Non-chromium and Low-chromium Passivation of Tin-Zinc Alloy Coatings

作　　者：张景双[1] 夏保佳[1] 屠振密[1] 安茂忠[1] 

机构地区：[1]哈尔滨工业大学应用化学系,黑龙江哈尔滨150001

出　　处：《电镀与精饰》2002年第3期9-11,共3页Plating & Finishing

摘　　要：目前 ,在锡 -锌合金上进行铬酸盐钝化已得到广泛应用 ,但六价铬化合物具有很高的毒性 ,又是第一类致癌物质 ,因而现在迫切需要开发对锡 -锌合金的代铬钝化工艺。主要研究了 Sn- Zn合金镀层的无铬和低铬钝化处理 ,并改善了合金镀层的耐蚀性。A wide range of chromate conversion coatings is currently used as topcoats on Sn Zn alloys. The hexavalent chromium compounds used are high toxic that is designated as class 1 carcinogen, and now the pressures for change are much stronger than ever. Recently, significant efforts have been made on the development of alternative as chromate passivates on tin zinc alloys. This paper shows that the use of non chromium and low chromium passivation on Sn Zn alloy coatings are developed, and can improve the corrosion resistnace.

关 键 词：锡-锌合金 镀层 无铬 低铬 钝化 铬酸盐化 

分 类 号：TQ153.2[化学工程—电化学工业]