无氰硫代硫酸盐镀银液稳定性检测分析  

Monitoring Stability of Bath for Cyanide-Free Silver Electroplating

作　　者：王春霞[1] 赵晴[1] 杜楠[1] 简志超[1] 

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《材料保护》2011年第2期67-69,9,共3页Materials Protection

基　　金：江西省教育厅项目(DA200400078)

摘　　要：无氰硫代硫酸盐镀银液的稳定性对其生产应用影响很大。采用陈化和连续镀试验测试了无氰硫代硫酸盐镀银液的稳定性,并从理论上分析了镀液不稳定的原因,提出了有效维持镀液稳定的方法。结果表明:镀液在低温避光环境中可长期保存;及时补充镀液中硫代硫酸盐和焦亚硫酸钾的含量,连续镀15 d后镀液仍澄清,无黑色沉淀。The stability of the thiosulfate plating solution for cyanide-free Ag electroplating was monitored by conducting aging test and continuous plating test.The causes leading to instability of the plating solution were analyzed,and the method to effectively maintain the stability of the plating bath was established.It was found that the cyanide-free thiosulfate Ag electroplating solution could be well stored in a long run while being kept without light at low temperature.The solution was still clear after plating for 15 d by supplementing thiosulfate and potassium pyrosulfite in time during the plating process.

关 键 词：镀液稳定性 检测分析 镀液陈化 连续镀 无氰硫代硫酸盐镀银液 

分 类 号：TQ153.16[化学工程—电化学工业]