Protective coating for metal pieces with a good resistance against corrosion in a saline atmosphere and metal pieces with such a protective coating

摘要

A coating which protects metal components against corrosion in a saline atmosphere comprises a base layer of alloy containing zinc and 10-16% by weight of nickel and a top layer of alloy containing tin and 8-35% of Zn, the base and top comprising two thirds and one third respectively of the coating thickness. Also claimed is a metal component with this coating.