In order to obtain chromium containing zinc alloy coating with excellent performance,mechanical plating technologies of Zn-Cr and Zn-Al-Cr alloy coatings were developed through varying the kind and amount of activator and promoter on the basis of mechanical plating technologies of Zn and Zn-Al coatings.

In this work, chemically precipitated nickel hydroxide powder has been surface-modified by electroless deposition of Co-Zn coatings.