镀锌层的三价铬钝化  

Trivalent chromium passivation for zinc electrodeposites

作　　者：邹锦光[1] 刘建平 曾振欧[1] 赵国鹏 

机构地区：[1]华南理工大学化学科学学院,广州510640 [2]广州二轻工业科学技术研究所,广州510170

出　　处：《电镀与涂饰》2005年第8期46-48,共3页Electroplating & Finishing

摘　　要：三价铬钝化在许多方面具有与六价铬钝化类似的性质,而毒性只有六价铬的百分之一。介绍了三价铬钝化技术兴起的背景、三价铬钝化溶液组成及操作条件、成膜机理、钝化膜颜色以及几种典型的镀锌层三价铬钝化液。提出选取更合适的添加剂及加速钝化膜形成的金属离子是今后三价铬钝化的研究重点。Trivalent chromium passivation possesses as good performance as hexavalent chromium passivation, but the toxicity related to trivalent chromium passivation is only one percent of the latter one. This paper summarizes the background of the development of trivalent chromium passivation technique, the composition of passivation solution, operation conditions, the formation mechanism and the color of passivating film. Several typical trivalent chromium passivation solutions are also introduced. It＇s suggested that the emphasis for future research be put on the choosing of more suitable additives and metal ions accelerating the formation of passivating film.

关 键 词：三价铬 钝化 镀锌 

分 类 号：TG174.4[金属学及工艺—金属表面处理] TQ153.1[金属学及工艺—金属学]