pH值对镍钨合金镀层电镀质量的影响  

Effects of pH values on the quality of plated Ni-W alloy coating

作　　者：陈艳芳[1] 陈峰[1] 苌清华[1] 邢志涛[1] 吴佩佩[1] 

机构地区：[1]河南科技大学材料学院,河南洛阳471003

出　　处：《南方金属》2009年第4期12-13,17,共3页Southern Metals

基　　金：河南科技大学人才科研基金项目(04015)

摘　　要：通过电沉积的方法在钢片基体上获得N i-W合金镀层,研究了改变镀液组成中pH值对电沉积N i-W合金镀层的组成及其镀层形貌的影响.结果和理论分析表明:pH值太高,N i-W合金镀层变脆,而且起泡;pH值太低,镀层灰暗.当pH为6.5时,镀层质量较好,比较平整,致密,均匀,没有气泡和明显剥落现象.An Ni-W alloy coating was produced by electro-deposition on a steel substrate, and the effects of pH value of the plating bath on the composition and surface quality of the coating were investigated. It was found that too high a pH value would embrittle and blister the coating,while too low a pH value,on the other hand,would make the coating gloomy. A pH value of 6.5 would yield a smooth, uniform and dense coating without blistering and falling off.

关 键 词：电沉积 镍钨合金镀层 非晶态 

分 类 号：TQ153.2[化学工程—电化学工业]