【摘 要】
：
A Cr-Co-P alloy electroplating coating was prepared from trivalent chromium bath and the appearance and performances of the coating were characterized.The C
【机 构】
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School of Environmental Science and Engineering,Huangshi Institute of Technology,Huangshi Hubei Chin
【出 处】
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Fifth International Conference on Surface Engineering(第五届表面工
论文部分内容阅读
A Cr-Co-P alloy electroplating coating was prepared from trivalent chromium bath and the appearance and performances of the coating were characterized.The Cr-Co-P alloy electroplating bath was prepared through adding cobalt chloride,sodium hypophosphite monohydrate,urea,sodium format,ammonium citrate tribasic,boric acid,and ammonium brome into a trivalent chromium solution,which was made using methanol dried to reduce chromium trioxide in 10 % sulfate acid.OptimumAlating crafts were determined as follows:pH value 1.5~3.0,temperature 25~45 ℃,plating time 1~15 minutes,and current density 5~25 A·cm-2.Reticulate iridium dioxide coating electrode or highly pure graphite electrode were adopted as anode.And electro deposition experiments were carried out with air disturbance.
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