ELECTROPLATING OF IRON AND COATING SUBSTRATES WITH AN IRON-ALUMINUM COATING

摘要

A method of electroplating comprising employing an electroplating bath containing an electrolyte selected from the group comprising ferrous chloride and ferrous sulphate and in which is dissolved an amount of an additive selected from the group of citrates and citric acid which inhibits the formation in the bath of insoluble ferric compounds, iron being periodically added to the bath at a rate sufficient to reduce substantially all the ferric citrate formed therein by aeration.