采用氨基酸类添加剂在焦磷酸盐体系中电沉积出锡含量67%、颜色与镍镀层相仿、耐腐蚀性能优异的Sn-Ni合金镀层.研究了镀液中添加剂含量变化对锡镍合金镀层含量、表面形貌和耐蚀性的影响.结果表明:当添加荆用量为2.0 g/L时,对镀液的稳定性和镀层锡含量均有显著影响,耐蚀性能显著提高.同时中性盐雾试验测试结果表明,Sn-Ni合金镀层的耐蚀性比单金属镍镀层更为优异.
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