PMTA和HDT对银防变色作用的比较  

The Comparison of PMTA and HDT for Silver Tarnish Prevention

作　　者：鲁文晔 陈蝶依 陈步荣[1] 汤涛[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009 [2]南京大学匡亚明学院,江苏南京210023

出　　处：《电镀与精饰》2015年第12期29-32,46,共5页Plating & Finishing

摘　　要：在银表面分别用1-苯基-5-巯基四氮唑乙醇溶液和十六硫醇乙醇溶液制备了防银变色保护膜。采用硫化氢腐蚀试验和极化曲线、交流阻抗及循环伏安等电化学方法测试。对防变色性能进行了比较。结果表明,十六硫醇乙醇溶液对银的防变色效果优于1-苯基-5-巯基四氮唑乙醇溶液。The protective coatings on silver surface were prepared by using l-Phenyl-1H-tetrazole-5-thiol（PMTA） ethanol solution and hexadecane-thiol（HDT） ethanol solution respectively.The tarnish prevention performances were compared through H_2S accelerating tarnish test,polarization curve,AC impedance and cyclic voltammetry methods.The results showed that the tarnish prevention performance of HDT was better than that of PMTA.

关 键 词：1-苯基-5-巯基四氮唑 十六硫醇 银 防变色 

分 类 号：TG172.3[金属学及工艺—金属表面处理]