High velocity air fuel (HVAF) spraying of nickel phosphorus-coated cubic-boron nitride powders for realizing high-performance tribological coatings

High velocity air fuel (HVAF) spraying is an emergent thermal spray process, which used in this work to realize high-performance large area tribological coatings of nickel-phosphorus cladded cubic-boron nitride (c-BN) particles. To the best authors’ knowledge, first time that HVAF has been utilized for developing Ni–P reinforced with c-BN (NBN). The importance appropriate processing was highlighted by utilizing two different nozzle configurations, microstructure, phase analysis and hardness results demonstrates considerable differences. Furthermore, were subjected sliding wear tests assess their friction characteristics. Post-wear SEM reveals associated mechanisms. Effect annealing on performance NBN also examined, it shown optimal can preclude need post-treatment. Results ensuing from lay foundation new generation HVAF-sprayed resistant metal/c-BN composite diverse applications.