Deposition of Electroless (Ni-P-ZnO) Ternary Alloy for Adhesion Strength on Magnesium (AZ91) Alloy: Effect of Surfactant

Abstract

Abstract-M agnesium (AZ91) based alloy are being used as structural components in industry because of their high strength-toweight ratio and relatively high stiffness. A shortcoming of AZ91 based alloys is their poor wear and corrosion resistance. Therefore, surface treatment or coatings are needed for protection purpose. Electroless coatings are recognized for their excellent properties and their utilization has witnessed a staggering increase during the last few decades. This present study shows our work on electroless Ni-PZnO ternary alloy coatings on AZ91 alloy with influence of anionic surfactant. Results revealed that at an optimum concentration of the surfactant, the coatings obtained a smoother surface and good adhesion as compared to the coating obtained absence of the surfactant. As-deposited substrates were characterized by field emission scanning electron microscopy and energy dispersive X-ray analysis (FESEM -EDAX).