▎ 摘　　要

NOVELTY - Graphene/silicon carbide reinforced copper-based composite material comprises 0.3-0.8 wt.% graphene, 0.2-0.6 wt.% silicon carbide, 0.02-0.2 wt.% nickel and copper (balance amount). USE - Used as graphene/silicon carbide reinforced copper-based composite material. ADVANTAGE - The composite material: has excellent conductivity, high strength, high hardness, excellent toughness, and excellent wear resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene/silicon carbide reinforced copper matrix composite material, comprising (i) pre-treating the original copper powder, and then mixing pre-treated copper powder, ultra-fine silicon carbide powder and nickel powder in high-speed mixer for 8-10 hours to obtain mixed powder, (ii) placing graphene in absolute ethanol for ultrasonic dispersion for 50-70 minutes, adding mixed powder and stearic acid with a mass of mixed powder of 0.8-1 wt.%, performing ultrasonic dispersion at 45-50 degrees C for 20-30 minutes, then stirring and mixing for 10-15 minutes to obtain composite powder suspension, (iii) placing the composite powder suspension in a ball milling tank, evacuate and pass through high-purity argon gas protection, and then perform ball milling, (iv) placing the resulting slurry after ball milling in an evaporation kettle, dry and process the slurry to a semi-dry state with stirring, and then transferring to a vacuum oven for sufficient drying treatment to obtain mixed powder, insulating the mixed powder at 255-265 degrees C for 1.5 hours to remove stearic acid to obtain copper-based mixed powder, (v) adding copper-based mixed powder into the steel mold, pre-press forming under the pressure of 100-160 MPa, and then placing bank compact in the high-strength graphite mold, (vi) heating after a vacuum of 2-3x 10-3 Pa, then hot pressing at 840-860 degrees C under a hot pressing pressure of 40-50MPa for 100-130 minutes, sintering, cooling the composite material blank to room temperature with the furnace, and (vii) hot-rolling the prepared composite material blank at 710-730 degrees C after the hot-rolling is completed, heating at 360-400 degrees C for 60-90 minutes, cooling to 160-180 degrees C, and then air-cooling to room temperature to obtain final product.