Application of Electroless nickel plating on AM60B magnesium alloy via Ti-Zr/sol-gel composite layer as a pretreatment

In order to improve the corrosion resistance of magnesium alloy, Ni-P coating was prepared on the surface of AM60B magnesium alloy by chemical deposition method. In this experiment, morphology, composition and corrosion behaviour of the coatings were investigated by Scanning Electron Microscopy (SEM), Energy Dispersive x-ray Spectroscopy (EDS) and electrochemical impedance spectroscopy (EIS), respectively. The The results showed that Ni-P coatings provide sufficient protection against the corrosion.