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.

铁件在由硫酸、硫酸亚、络合剂、稳定剂等组成溶液中,可以置换镀覆质分- 合金镀层,其工艺可替代氰化物预镀,消除氰化物污染,是实现电镀清洁生产措施之一。

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

液相络合法常用金属络合剂有亚铁络合剂和钴络合剂等。