▎ 摘　　要

NOVELTY - Metal graphene composite material comprises metal substrate, copper layer and graphene thin film. The metal substrate and copper layer are metallurgically combined. The graphene thin film is grown on the outer surface of copper layer. USE - Metal graphite composite material. ADVANTAGE - Because the graphite has good mechanical property, the graphene thin film lubricating property is greatly increased, hence reducing the friction force of pure metal or alloy surface, and increasing the lubricating service life of pure metal or alloy. The composite material is capable of growing graphene on large area metal material, does not need corrosion copper foil, has simple preparation process, low production cost and is convenient for industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphite composite material comprising forming copper layer on metal substrate surface, and then forming graphene thin film on copper layer surface.