Effect of electroless nickel plating process for aluminium alloy on deposition rate of the coating

According to the feature of aluminum alloys,for the first time,a special pretreatment was used to plate Ni-P immediately on aluminum alloy.A electroless Ni-P alloy plating process applicable to aluminum alloy was obtained through studying the influence of the bath components including nickel salt,reducing agent, complexing agent and pH value on deposition rate of the coating.The coating has a bright appearance and good adhesion and corrosion resistance.