镁合金直接化学镀镍的无铬无氟前处理研究  

Chrome and Fluorine-Free Pretreatment of Magnesium Alloy for Direct Electroless Nickel Plating

作　　者：刘海萍[1] 王艳青[1] 毕四富[1] 李宁[1] 

机构地区：[1]哈尔滨工业大学(威海)海洋学院,山东威海264209

出　　处：《电镀与环保》2010年第4期14-16,共3页Electroplating & Pollution Control

基　　金：哈尔滨工业大学(威海)研究基金(HIT(wh)XB200802)资助

摘　　要：通过正交实验优选了镁合金化学镀镍无铬无氟的前处理工艺。该前处理液基本组成为马日夫盐、磷酸、硝酸等,在25℃下,酸洗3 min。采用该工艺,不仅能明显提高镁合金基体的耐蚀性,同时还能改善镁合金与化学镀镍层的结合力。A chrome and fluorine-free pretreatment process of magnesium alloy for electroless nickel plating was selected optimally by orthogonal test method.The pretreatment bath mainly consists of （Mn（H_2PO_4）_2·H_2O,） H_3PO_4 and HNO_3,with 3 min dipping at 25 ℃.The corrosion resistance of magnesium alloy substrate and the adherence between the electroless nickel coating and magnesium alloy can be both improved by this process.

关 键 词：镁合金 化学镀镍 无铬无氟 前处理 

分 类 号：TQ153[化学工程—电化学工业]