In response to growing needs for improved corrosion resistance in the steel parts of automobiles and aircraft, electroplating of zinc-nickel alloys is being applied in place of pure zinc plating
Experiments were undertaken to determine the dependence of zinc-nickel alloy plating electrodeposition and surface morphology from sulfate solutions on surfactants
Cathode current density, surfactant types, and amounts in the baths were found to strongly influence deposit composition, surface morphology, and crystal structure Despite identical plating conditions, dodecyltrimethylammonium chloride (DTAC) addition from 5×10^-5 to 1×10^-4mol/L decreases the deposit's nickel content, but polyoxyethylenelaurylamine (POELA) addition at 5×10^-3mL/L increases the deposit's nickel content. Anomalous codeposition is greatly accelerated by adding DTAC, but adding POELA helps ameliorate anomalous codeposition