▎ 摘　　要

NOVELTY - Preparing graphene-reinforced red copper contact material comprises: (i) mixing solid carbon source and catalyst, and pre-coating on surface of red copper material to obtain prefabricated layer; and (ii) irradiating prefabricated layer by using high-power laser i.e. semiconductor laser, carbon dioxide laser and optical fiber laser, and growing surface-covered graphene on prefabricated layer when the laser is closed. The solid carbon source is natural graphite powder, artificial graphite powder, highly oriented pyrolytic graphite powder or nickel-coated graphite powder. The catalyst is formed by mixing nickel powder and copper powder. USE - The method is useful for preparing graphene-reinforced red copper contact material, which is useful for electric contact i.e. electric switch and instrument assembly in high-voltage power system. ADVANTAGE - The method enables to prepare graphene-reinforced red copper contact material that fully exerts graphene's high melting point, high thermal conductivity, high conductivity, chemical inertness and high friction coefficient, which provides a reliable guarantee for reducing ablation and wear of contact material, solves ablation and mechanical wear caused by electric arc in direct current (DC) switch and dynamic and static contact friction during service process of red copper contact material, and improves use performance and service life of direct-current switch key component contact material. The laser processing is a high-efficiency and environmentally-friendly processing method, which is suitable for popularization and use in industry.