▎ 摘　　要

NOVELTY - Preparing carbon nanotubes-reinforced coating by supersonic laser deposition method, comprises (i) coating surface of carbon nanotubes or graphene with dense plating layer, (ii) adding the coated carbon nanotubes or graphene obtained in step (i) to cold spray material and carrying out powder mixing to obtain composite powder, and (iii) spraying the composite powder obtained in step (ii) on to the surface of the substrate by supersonic laser deposition to form dense coating. USE - The method is useful for preparing carbon nanotubes-reinforced coating by supersonic laser deposition method. ADVANTAGE - The method ensures uniform distribution of carbon nanotubes or graphene in the coating, which improves mechanical properties of the coating. DETAILED DESCRIPTION - Preparing carbon nanotubes-reinforced coating by supersonic laser deposition method, comprises (i) coating surface of carbon nanotubes or graphene with dense plating layer, where the melting point of the coating is lower than that of carbon nanotubes or graphene, and mass ratio between coating and carbon nanotubes or graphene is 99-200:1, (ii) adding the coated carbon nanotubes or graphene obtained in step (i) to cold spray material and carrying out powder mixing to obtain composite powder, where the mass percentage of the coated carbon nanotubes or graphene in the composite powder is 1-5%, and (iii) spraying the composite powder obtained in step (ii) on to the surface of the substrate by supersonic laser deposition to form dense coating, where the supersonic laser deposition method uses semiconductor laser, the wavelength is 960-1100 nm, power density is 3-5x 105 W/cm2, laser power is 500-3000 W, spraying distance is 30 mm, scanning speed is 10 mm/second, powder feeding amount is 30-60 g/minute, carrier gas preheating temperature is 500 degrees C, carrier gas pressure is 4 MPa, and carrier gas is compressed air or nitrogen.