Research Progress on Improving Wear Resistance of Nickel-Based Composite Coatings by Laser Cladding

 Laser cladding nickel-base coatings are playing an important role in improving the surface properties of materials due to their high bonding strength and good wear resistance.However，the hardness and wear resistance of common nickel-based coatings are difficult to meet the application requirements of parts in harsh environment due to the lack of wear-resistant hard phase.In order to further improve the wear resistance of the coating，several strategies were proposed by domestic and foreign scholars: mechanically adding or in-situ synthesizing hard ceramic particles in the coating，or adding graphene，carbon nanotubes and rare earth oxides in the coating，or establishing a prediction model between the process parameters and the coating performance and then optimizing the process parameters using algorithms such as adaptive chaos differential evolution algorithm and gray correlation analysis，or using auxiliary processing in laser cladding.In this paper，the influence of coating composition，process parameters and auxiliary treatment on wear resistance of nickel-base composite coating was reviewed，and the development prospect of laser cladding nickel-base composite coating was put forward.