Corrosion resistance of a Zn–Ni electrodeposited alloy obtained with a controlled electrolyte flow and gelatin additive

Studies of the factors that enhance the corrosion resistance of electrodeposited Zn–Ni alloys are highly relevant due to these alloys' widespread industrial use as protective coatings for steel substrates. This paper reports on an investigation into the effect of the flow rate and the addition of gelatin to the plating bath on the corrosion resistance of Zn–Ni electrodeposits. An increase in the flow rate and gelatin content in the plating bath promoted an increase in the corrosion resistance of Zn–Ni deposit. This behavior cannot be explained in terms of composition because it involves the grain morphology of the electrodeposited alloy.