Abstract
Samples in which nickel was electrodeposited on copper plate from Ni (CF3COO)2-halide-MeOH baths at 1.5A/dm2 at 30°C until thickness reached about 50μm, were prepared. Measurements were conducted to determine the polarization curves and corrosion weights of the nickel in 1.5N acid solutions (HCl, H2SO4 and HNO3) and the nickel surfaces were observed before and after acid exposure. It was found that the behavior for acids was affected by both cations and anions of the halide in the bath from which the nickel was electrodeposited.