Abstract
SUMMARYZinc electrodeposits are widely used to protect iron and steel from corrosion. Zinc coatings are presently obtained from chloride and non-cyanide alkaline baths. Environmental corrosion along with the electrolyte's sensitivity towards metallic impurities limit the use of the chloride electrolyte. The use of brighteners, less cathode efficiency and the effluent treatment restrict the use of non-cyanide zinc plating baths. Hence, there is a need for a better zinc plating electrolyte. In this paper details of zinc plating from acetate electrolytes, and the effects of brighteners I. vanillin. 2. polyvinyl alcohol. 3. triethanolamine, 4. lactic acid, 5. thiamine hydrochloride in acetate based zinc plating electrolyte are presented.
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