▎ 摘　　要

NOVELTY - Alloy powder comprises 0.1-1 %mass graphene oxide, 1-1.3 %mass non-graphene carbon, 4-6 %mass titanium, 6-10 %mass chromium, 5-7 %mass tungsten, 0.5-1.1 %mass manganese, 3-7 %mass nickel, 1-3 %mass vanadium and 64-79 %mass iron. USE - The alloy powder is used for graphene oxide composite iron-based coating (claimed). ADVANTAGE - The coating prepared by using the alloy powder has high strength and hardness, excellent wear resistance and long service life. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing graphene oxide composite iron-based coating involving taking alloy powder, taking substrate, and performing laser cladding on the substrate using the alloy powder to form the product; and (2) a product protected by a graphene oxide composite iron-based coating comprising a substrate and a graphene oxide composite iron-based coating formed on a surface of the substrate.