A METHOD FOR OBTAINING THE PROTECTIVE AND DECORATIVE MULTILAYER COATINGS

摘要

A method for obtaining the protective and decorative multilayer coatings on steel articles involves application of copper and nickel sublayer and electric precipitation of copper and nickel coatings from sulprhuric acid electrolytes. The copper and nickel sublayer is applied in the bath of collecting sulphuric acid electrolytes of copper and nickel coating with periodical inclusion of mixing, in the solution of bath of collecting content of copper ions is maintained, and in addition incorporated is the mixture of (NH4OH+(NH4)2SO4).