Properties of Pure Silver Coating and Pure Silver/Silver-Graphite Composite Coating Prepared in KI System
摘 要
在KI体系下使用电沉积方法在铜基体表面分别制备了纯银镀层和纯银/银石墨复合镀层,研究了两种镀层的结合力、耐磨性、耐蚀性、热导率和电阻率。结果表明:在KI体系下制备的纯银镀层和纯银/银石墨复合镀层与铜基体的结合力都达到GB/T 5270-2005标准要求;纯银/银石墨复合镀层的平均摩擦因数和磨损率分别为0.178和2.457×10-11 mm3·N-1·m-1,远远小于纯银镀层的0.515和6.501×10-11 mm3·N-1·m-1,其耐磨性优于纯银镀层的,但其耐蚀性比纯银镀层的差;纯银/银石墨复合镀层的热导率明显优于纯银镀层的,电阻率高于纯银镀层的。
Abstract
Pure silver coating and pure silver/silver-graphite composite coating were prepared on the surface of copper substrate by the method of electro-deposition in a system of KI. The adhesion strength, wear resistance, corrosion resistance, thermal conductivity and resistivity of the pure silver coating and pure silver/silver-graphite composite coating were investigated. The adhesion strength of the pure silver coating and pure silver/silver-graphite composite coating on copper substrate met the requirement of GB/T 5270-2005 standard. The average friction coefficient and wear rate of the pure silver/silver-graphite composite coating were 0.178 and 2.457×10-11 mm3·N-1·m-1 respectively, much less than those of pure silver coating, 0.515 and 6.501×10-11 mm3·N-1·m-1. The pure silver/silver-graphite composite coating exhibited better wear resistance and worse corrosion resistance compared with the pure silver coating. The thermal conductivity of the pure silver/silver-graphite composite coating was obviously better than that of the pure silver coating, but the resistivity of the pure silver/silver-graphite composite coating was higher than that of the pure silver coating.
中图分类号 TQ153.1+6 DOI 10.11973/fsyfh-201804002
所属栏目 试验研究
基金项目 江西省自然科学基金(20151BAB206017);江西省科技成果重点转移转化计划项目(20151BBI90006);江西省教育厅科学技术研究项目(GJJ150723);江西省金属材料微结构调控重点实验室基金(JW201523004);国网浙江省电力公司科技/信息化项目(B355DW140005)
收稿日期 2016/10/10
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引用该论文: HE Qingqing,GONG Lieqian,YI Yongli,YE Zhiguo,CHEN Chuan,MA Guang. Properties of Pure Silver Coating and Pure Silver/Silver-Graphite Composite Coating Prepared in KI System[J]. Corrosion & Protection, 2018, 39(4): 253
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