Ni/h-BN is an excellent high-temperature solid lubricant.The poor sinterability of h-BN and its poor wettability with metal materials limit its further application.The current research on the performance of the seal coating focuses on the tribological performance of the coated parts at working temperature(high temperature),while the rotor object of the aeroengine coating and the seal coating are mainly at room temperature when scraping and grinding.However,the tribological properties of Ni/h-BN coatings at room temperature are insufficiently studied.Therefore,the research focuses on the tribological properties of Ni/h-BN coating prepared by laser cladding at room temperature.Combined with the surface morphology of laser cladding coatings,the process parameters are 500 W power and 350 mm/min scanning speed,which is the best melting.The Ni/h-BN composite coating is matched with Si3N4 ceramic balls,the load is 3 N,the sliding speed is 0.10 m/s,0.15 m/s,0.20 m/s,0.25 m/s.At room temperature,the wear rate of Ni/h-BN coating is on the order of 10-4 mm3/(N·m)under the friction 240 m,and it gradually decreases with the increase of sliding speed.
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