Corrosion Resistance of Electrodeposited Ni-Fe Alloy Coatings with Different Contents of Fe

Ni-Fe alloy coatings with different Fe contents were fabricated by electroplating on LY12CZ aluminum alloy substrates.Potentiodynamic polarization curves in 3.5% NaCl solution were tested to investigate the corrosion resistance of the coatings.The results showed that the Ni-Fe coating with 7.3% Fe had better corrosion resistance than Ni coating.With the increase of Fe content,the grain size enlarged,porosity rised,and corrosion resistance declined.