无氰镀银溶液组成对镀层外观影响的研究  

Effect of Cyanide Free Silver Plating Solution Composition on Coating Morphology

作　　者：杨培霞[1] 赵彦彪[1] 杨潇薇[1] 张锦秋[1] 安茂忠[1] 

机构地区：[1]哈尔滨工业大学化工学院,黑龙江哈尔滨150001

出　　处：《电镀与精饰》2011年第11期33-35,共3页Plating & Finishing

基　　金：哈尔滨市科技攻关项目资助(2005AA5CG156)

摘　　要：为了解决氰化物镀银溶液给环境带来的污染,采用5,5-二甲基乙内酰脲和焦磷酸钾为配位剂,研究了低污染无氰镀银溶液的组成。考察了硝酸银、5,5-二甲基乙内酰脲、碳酸钾、焦磷酸钾、添加剂的含量及pH对镀银层外观质量的影响;采用场发射扫描电子显微镜观察镀银层的微观形貌。实验结果表明,采用低污染无氰镀银溶液可获得光亮细致的镀银层,镀银溶液对环境污染小,其废水处理容易,具有工业应用推广的价值。In order to eliminate the pollution of cyanide silver plating solution to the environment,the composition of alow polluted and cyanide free silver plating solution with 5,5-dimethylhydantoin（DMH） and potassium pyrophosphate as complex forming agent was studied.The surface morphology of silver coating was evaluated under different concentration of AgNO3,DMH,K2CO3,potassium pyrophosphate,additive and pH value.The results indicated that bright and fine silver coatings could be obtained in low polluted and cyanide free silver plating solution.And this low polluted and cyanide free silver plating solution has a potential application in electroplating industry because of low pollution to the environment and easy disposing of waste water.

关 键 词：无氰镀银 5 5-二甲基乙内酰脲 焦磷酸钾 低污染 

分 类 号：TQ153.16[化学工程—电化学工业]