▎ 摘　　要

NOVELTY - Nano silicon carbide/graphene composite material comprises graphene and nano silicon carbide. The graphene is grown on the surface of the nano silicon carbide in situ. The mass percentage of graphene is 2-3% and balance of nano silicon carbide. USE - The material is useful for surface protective coating composition in metal device and surface of metal equipment and cured (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the nano silicon carbide/graphene composite material, comprising mixing the nano silicon carbide powder and magnesium powder to obtain reactant, performing combustion synthesis reaction combusting the reactants in an oxidizing atmosphere under vacuum to completeness, purifying and drying the product.