电力节能接线端子表面镀层的试验研究

Experimental Study on Surface Electroplated Coatings of Power Energy Saving Terminal Lug

对铜基节能接线端子表面通过电镀覆盖Ag、Sn和Cu-Sn-zn三元合金镀层,对不同厚度、不同材质的接线端子进行镀层厚度检测、机械性能试验、电气性能试验、耐腐蚀性能试验和制造成本分析。结果表明,不同镀层材质、厚度对接线端子的电气性能影响很小,对耐腐蚀性能影响较大,Cu-Sn-Zn三元合金复合镀层耐腐蚀性能最佳。Ag镀层制造成本最高,Sn镀层制造成本最低。综合考虑,选择厚度不小于10μm的Cu-Sn-Zn三元合金复合镀层为最优选择。

The paper electroplates Ag, Sn and Cu-Sn-Zn three-element alloy coatings on the surface of copper based energy saving terminal lugs, and conducts the thickness measurement, mechanical performance test, electrical performance test, corrosion resistanee test and cost analysis on the terminal lugs with different thiekness and materials. The results show that the coating thickness and materials have little influence on the electrical property and much influence on the corrosion resistance of the terminal lugs, and the Cu-Sn-Zn three-element alloy coatings have the best corrosion resistance property. For the cost of Ag coatings is the highest and the cost of Sn coatings is the least, the paper points out that the Cu-Sn-Zn three-element alloy coatings thickness should not be less than 10 μm,which is the optimal choice.