▎ 摘　　要

NOVELTY - Preparing graphene coating comprises (i) removing oxygen-containing functional group on the surface of graphene oxide under synergistic action of an ambient atmosphere and a catalyst to obtain reduced graphene, and (ii) preparing graphene coating on metal friction sub-base by mechanical and chemical action of the reduced graphene. USE - The graphene coating is useful for improving corrosion resistance and wear resistance of metal (claimed). ADVANTAGE - The graphene coating: has high wear and corrosion resistance, excellent corrosion resistance in the contact between the medium and the substrate; and reduces the friction coefficient of the metal surface.