Pulse plating of Ni–B/WC nanocomposite coating and study of its corrosion and wear resistance

Abstract

ABSTRACT The aim of this study is to investigate the impact of WC content on the properties of the Ni–B/WC nanocomposites deposited by the pulse method. It is obtained that, although by addition of WC nanoparticles to the bath in initial steps (WC 4 and 8 g\u2009l−1), the grain size was increased and hence mechanical and electrochemical properties got worse, but at the higher amount of WC (WC 12 g\u2009l−1), due to the formation of the fine and packed structures, the great corrosion and wear resistance was achieved. The corrosion resistance of the Ni–B/WC12 g\u2009l−1 coating is 59,967\u2009Ω and wear weight loss is 2.1 mg\u2009cm−2 with the friction coefficient of 0.64.