银器的变色和防护技术

Silver Tarnishing and its Preventing Technique

分析了银器表面在硫化物、硫氧化物等腐蚀性气体环境中变色的机理和影响因素,讨论了银器表面处理防变色(贵金属或合金的涂层、阳极化钝化、阴极电泳、化学钝化、自组装单分子膜的防腐蚀等)的方法和加工技术,并提出了包装贮存材料处理防银器变色的新途径。

Mechanism and influential factors are analyzed for the silver surface tarnishing on exposure to atmosphere containing S-compounds.The methods and the precesses of the silver anti-tarnishing,such as extremely thin metal coating,anodic passivation treatment,cathodic electrophoresis,chemical passivation and self-assembled monolayer (SAM),have been evaluated.The packaging materials having protective properties would provide an easy way for preventing tarnishing of silver.