插套用导电CuSn合金耐腐蚀性能提升研究

Research on improving the corrosion resistance of conductive CuSn alloy for socket

摘要: 用半连续铸造法制备5种合金。通过力学性能测试、盐雾腐蚀失重实验和直观颜色对比，优化出新耐腐蚀插套用导电CuSn合金成分。结果表明，若考虑综合力学性能、电性能、中性盐雾腐蚀失重率、制造成本等因素，合金成分控制范围为（质量分数）：Sn为0.8%~1.2%、Ni为0.8%~1.2%、Al为0.4%~0.6%、Zn为0.5%、Si为0.15%、Zr为0.05%，其余是Cu和不可避免的杂质元素。

Abstract: Five alloys were prepared by the semi-continuous casting method. Through mechanical performance testing, salt spray corrosion weight loss test and intuitive color comparison, the conductive CuSn alloy composition was optimized for new corrosion-resistant sockets. It showed that when factors such as the comprehensive mechanical properties, electrical properties, neutral salt spray corrosion weight loss rate, manufacturing cost were considered, the alloy composition control range was (mass fraction) Sn of 0.8%~1.2%, Ni of 0.8%~1.2%, Al of 0.4%~0.6%, Zn of 0.5%, Si of 0.15% and Zr of 0.05%. The residue was Cu and the unavoidable impurity elements.