▎ 摘　　要

NOVELTY - Preparing graphene reinforcing protective layer on stainless steel surface by laser comprises drying and thoroughly mixing in mass ratio of iron-cobalt-chromium-aluminum-copper-carboxylated graphene-manganese-silicon mixed powder before laser cladding, blowing iron-cobalt-chromium-aluminum-copper-carboxylated graphene-manganese-silicon mixed powder onto the surface of stainless steel by coaxial powder feeding device, performing laser cladding treatment to obtain cladding layer, producing a large number of graphene sheets and nanocrystals in iron-cobalt-chromium-aluminum-copper-carboxylated graphene-manganese-silicon laser cladding layer, where it is beneficial to refinement of microstructure of cladding layer, where the process parameters: laser power 1-1.7 kW; laser beam scanning speed is 2-9 mm/seconds; powder feeding rate is 27 g/minutes; spot diameter is 4.5 mm; argon flow rate is 30 l/minutes; and lap rate is 25%. USE - The method is useful for preparing graphene reinforcing protective layer on stainless steel surface by laser. ADVANTAGE - The method obtains a laser cladding layer, is metallurgically bonded to substrate, has extremely strong wear resistance on surface of stainless steel substrate and has high entropy alloy.