Электрохимическое осаждение блестящего цинкового покрытия, легированного кобальтом

Abstract

The weak-acid electrolyte has been developed for the electrodeposition of bright functionally Zn-Co coating. The character of solution composition and electrodeposition conditions effect upon the cobalt content was revealed. It was shown that in dependence on cobalt quantity, coprecipitated with zinc, the crystalline zinc (< 1 wt.% Co) as well as solid solution of cobalt in zinc (>2,5 wt.% Co) can be obtained. Alloying of zinc with cobalt was shown to increase the coating's microhardness, wear and corrosion resistance.