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

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 l⁻¹), the grain size was increased and hence mechanical and electrochemical properties got worse, but at the higher amount of WC (WC 12 g l⁻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 l⁻¹ coating is 59,967 Ω and wear weight loss is 2.1 mg cm⁻² with the friction coefficient of 0.64.