Abstract
Electrodeposition of zinc on steel was obtained from chloride bath containing condensation product of a polymer Chitosan and Vanillin. The effect of bath constituents, pH, current density and temperature on deposit nature was studied by Hull cell experiments. The bath composition and operating parameters were optimized. The metallurgical properties and corrosion resistance of deposits were discussed. Throwing power and current efficiency values under different plating conditions were measured. SEM photomicrographs of the deposit were used for the study of surface morphology. The inclusion of addition agent in the deposit was inferred from the IR spectrum of the scraped deposit.
NSTL