Improvement of Hot Galvanizing By Nickel Under Layer


Zn–Ni alloy based coatings have high corrosion resistance, good adherence andunique physical as well as mechanical properties. In the present work, nickel wasdispersed in the under layer of hot dip zinc coating (Galvanizing). showed substantialimprovement in physical as well as galvanic performance. The presence of nickel in theunder layer was found to result in good adherence, less porosity and better hardness .Thepresence of nickel decreases the thickness of the coating and enhances the corrosionresistance character.