摘要
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:当添加剂用量为2.0g/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。
By introducing amino acid additives in the pyrophosphate plating bath,the Sn-Ni alloy coating containing 67% Sn(mass fraction),having similar color to Ni coating and excellent corrosion resistance as well,was prepared using electro-deposition.The effect of the concentration of the additive in the plating bath on the composition,morphology,and corrosion resistance of the Sn-Ni alloy coating was investigated.It was found that the amino acid additives had significant effects on the stability of the plating bath and the composition of the alloy coating.The alloy coating deposited from the plating bath containing 2.0 g/L of the amino acid additives had considerably improved corrosion resistance,and it was superior to electrodeposited Ni coating in terms of the corrosion resistance.
出处
《材料保护》
CAS
CSCD
北大核心
2008年第5期4-6,共3页
Materials Protection
基金
国家自然科学基金重点项目(50531060)
国家自然科学基金杰出青年基金(10525211)
国家“863”引导项目(2005AA01210)
