AQUEOUS, ALKALINE BATH, DEVOID OF CYANIDE, FOR DEPOSITING ELECTROPLATED ZINC ALLOY COATINGS

摘要

The invention relates to an aqueous, alkaline electrolyte bath, devoid of cyanide, for depositing zinc alloy layers on substrate surfaces, said bath containing cationic pyridinium compounds as brighteners and polyamines as complexing reagents. The electrolyte bath is suitable for the deposition of glossy, uniform zinc alloy coatings.