锌锰异常共沉积的研究  

Anomalous Co-Deposition of Zinc and Manganese

作　　者：符德学[1] 缪绢[2] 王拥军[1] 舒余德[3] 

机构地区：[1]焦作大学生化系,河南焦作454100 [2]焦作工学院,河南焦作454100 [3]中南大学冶金科学与工程系,湖南长沙410083

出　　处：《材料保护》2003年第9期38-40,共3页Materials Protection

基　　金：河南省自然科学基金资助项目(0211062700)

摘　　要：　研究发现锌锰合金电沉积时,在一定条件下也存在异常共沉积现象。首次采用分电流法,在阴极电流密度超过一定值之后锌的分电流随阴极电流密度的增大而下降,同时锰的分电流却在增加,当锰的分电流与锌的分电流之比超过一定值时就出现了异常共沉积。同时还研究了溶液中锌、锰离子的浓度比对锌锰合金电沉积由正常到异常的转变规律。The anomalous codeposition of Zn and Mn was observed in our experiment. It was found by partial current curve that the difference change between iZn and iMn with cathodic current density was the main cause for the anomalous codeposition of Zn and Mn. When iZn reduced whole iMn increased with the increasing of cathodic current density. When the ratio of iMn and iZnexceeded certain value, the anomalous codeposition of Zn and Mn would happen. The transition from normal to anomalous codeposition of Zn and Mn was influenced by concentration and ratio of Zn2+ and Mn2+ in solution.

关 键 词：锌锰合金电沉积 异常共沉积 分电流曲线 

分 类 号：TQ153[化学工程—电化学工业]