Effect of Al2O3 and WO3 Ceramic Additives on the Surface Morphology and Mechanical Properties of Electroless Nickel-Boron Composite Coatings Fabricated on AZ31 Magnesium Alloy

Abstract

In the present study, synthesis and a comparison of properties (structural and mechanical)  of  Ni–B and Ni–B–Al₂O₃ and Ni-B-WO₃ composite coatings have been presented  to  elucidate the beneficial role  of Al₂O₃ or WO₃ addition in  binary Ni–B coatings. The  Ni–B– Al₂O₃ and Ni-B-WO₃ coatings were synthesized by  adding Al₂O₃ or NaWO₃ powdered particles into the  above  mentioned Ni–B  coating solution.  A significant improvement in mechanical properties has been observed by the addition of Al₂O₃ or WO₃ additions.  This novel composite coating composition will be useful for wear and corrosion applications.

DOI: 10.7176/CMR/11-8-05

Publication date:October 31^st 2019