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首页> 外文会议>Proceedings of the 5th international conference on reliability of electrical products and electrical contacts >Investigation of the Accelerated Corrosion Methods for Silver Plated Contacts
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Investigation of the Accelerated Corrosion Methods for Silver Plated Contacts

机译：镀银触点的加速腐蚀方法研究

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Silver has been considered as a substitute choice of plating materials on connectors for its good electrical characteristics and low cost comparing with gold plating.But the low sulfidation resistance of silver cannot be neglected.Therefore, both the corrosion resistance property and the quality of silver plated contacts need be evaluated in practical manufacture and application.In this paper, silver plated samples were corroded by three accelerated corrosion methods, hydrogen sulfide (H2S) single gas, sulfurous acid (H2SO3) vapor and potassium sulphide (K2S) solution according to the national and enterprise standards respectively.Then the morphology, element compositions and contact resistance of the silver plated coupons were analyzed and compared after different corrosive time.The different mechanisms of the chemical reactions were discussed respectively.The corrosive extent was also compared with the silver plated coupons after long-term indoor natural exposure.The detection of porosity on silver plated coupons was suggested.The application of different accelerated corrosion methods for the evaluation of silver plating was proposed finally.
机译：与镀金相比，银由于其良好的电气特性和低成本而被认为是连接器上电镀材料的替代选择，但是银的低抗硫化性不容忽视，因此耐蚀性能和镀银质量都得到了认可。在实际生产和应用中，需要评估接触点。本文根据国家规定，采用三种加速腐蚀方法腐蚀了镀银样品：硫化氢（H2S）单一气体，亚硫酸（H2SO3）蒸气和硫化钾（K2S）溶液。然后对镀银试片在不同腐蚀时间后的形貌，元素组成和接触电阻进行了分析比较，分别讨论了化学反应的不同机理，并比较了镀银试片的腐蚀程度长期室内自然暴露后.por的检测提出了不同的加速腐蚀方法在镀银评估中的应用。

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