1.Cu-Sn alloy coating with different Sn content can be replacement plating out on iron and steel surface in a solution comprising of copper sulfate, stanous sulfate, complexant and stabilization agent.

1.铁件在由硫酸铜、硫酸亚锡、络合、稳组成的溶液中,可以置换镀覆不同锡质分数的铜- 锡合金镀层,其工艺可替代氰镀铜,消除氰污染,是实现电镀清洁生产措施之一。

2.Metal complexants such as ferrous complexant and cobaltic complexant are common used in this process.

2.液相络合法常用的金属络合有亚铁络合和钴络合。