三价铬体系电镀铬-镍合金工艺  

Chromium Nickel Alloy Electroplating Technology of Trivalent Chromium System

作　　者：冯绍彬[1] 冯丽婷[1] 商士波[1] 

机构地区：[1]郑州轻工业学院,河南郑州450002

出　　处：《材料保护》2004年第5期24-25,共2页Materials Protection

基　　金：国家自然科学基金项目 ( 2 0 3 760 77);河南省自然科学基金项目 ( 0 1110 3 160 0 )

摘　　要：采用工业铬酐 -甲醇还原法制备三价铬主盐 ,给出了电镀铬 -镍合金工艺配方与工艺规范并对镀层性能进行了测试。电流密度对镀层的成分和性质有较大的影响。含铬量 6 3%左右的铬 -镍合金镀层具有较好的硬度和耐蚀性。双层镍作中间镀层的装饰性铬 -镍合金试件经 16h铜加速盐雾试验 (CASS)后 ,外观未出现不良现象 ,镀层显示了较好的耐蚀性能。Trivalent chromium main salt was made by industrial chromic anhydride-methanol reduction method, technological formula and standard of chromium nickel alloy electroplating were given, and properties of alloy plating were determined. Current density has a great effect on the composition and properties of plating. The chromium nickel alloy plating containing 63 % chromium possesses high hardness and good corrosion resistance. After 16 hours of copper accelerated salt spray (CASS) test, the decorative Cr Ni alloy plating sample with double layer nickel as medium layer still retains perfect appearance and shows good anticorrosion performance.

关 键 词：电镀 铬-镍合金 耐蚀性 

分 类 号：TQ153.2[化学工程—电化学工业]