摘要
以硝酸银为主盐，磺基水杨酸为络合剂，醋酸铵和氨水为pH调节剂。研究了平均电流密度、脉冲宽度、占空比、溶液pH对镀层以及抗变色性能的影响；利用X-射线衍射分析研究了镀层结构。实验结果表明：常温下Jm=0．3～0．5A／dm^2，脉冲宽度为0．1～4ms，占空比为5％～25％，pH=8．8～9．3时，可以获得结合紧密、光亮细致的银镀层，且抗变色性能及耐腐蚀性均增强；X-射线衍射分析显示镀层主要成分是Ag。
With silver nitrate as main salts, sulfosalicylic acid as complexant, ammonium acetate and ammonia as pH regulator, the effects of average current density, pulse width, duty cycle and solution acidity on electroplating property and anti-tarnish property were investigated. The structure of coating were analyzed by X-ray diffraction（XRD）. The results showed that the compact, bright and uniform coating, with stronger anti-tarnish property and corrosion resistance, can be obtained under the conditions of average current density of 0.3-0.5 A/dm^2, pulse width of 0.1-4 ms, duty cycle of5%-25% , and pH value of 8.8-9.3. The results of X-ray analysis showed that the main component of the coating is Ag.
出处
《电镀与精饰》
CAS
北大核心
2009年第9期9-12,16,共5页
Plating & Finishing
关键词
脉冲参数
磺基水杨酸
无氰镀银
抗变色性
pulse parameters
sulfosalicylic acid
non-cyanide silver electroplating
anti-tarnish property
