▎ 摘　　要

NOVELTY - Preparation of graphene-reinforced copper composite material involves (1) adding 1-6 pts. wt. atomized copper alloy powder in a high purity ark, placing in high temperature tube furnace, removing air from the quartz tube, passing argon, heating the tube furnace to a growth temperature of 900-1000 degrees C at a heating rate is 10-30 degrees C/minute, passing hydrogen and methane into the quartz tube to grow graphene, cooling, obtaining copper alloy composite powder particles uniformly coated with graphene, (2) adding the composite powder particles obtained in step (1) into a cemented carbide mold, pressing at 200-300 MPa pressure, obtaining copper/graphene composite block blanks, feeding the obtained copper/graphene composite block blank into a tube furnace and sintering under the protection of an inert gas atmosphere, passing nitrogen at a flow rate of 150-200 sccm, sintering at 1000-1200 degrees C by heating at a rate of 8-10 degrees C/minute for 2-4 hour, and cooling to room temperature with the furnace. USE - Preparation of graphene-reinforced copper composite material. ADVANTAGE - The method provides high quality product, is simple and suitable for large-scale industrial production. The atomized copper powder particles are coated with graphene to increase the mechanical strength and conductivity of the composite material. DETAILED DESCRIPTION - Preparation of graphene-reinforced copper composite material involves (1) adding 1-6 pts. wt. atomized copper alloy powder in a high purity ark, placing the ark in the high temperature area in the middle of the quartz tube of the high temperature tube furnace, removing air from the quartz tube, passing argon at a flow rate of 200-400 sccm, heating the tube furnace to a growth temperature of 900-1000 degrees C at a heating rate is 10-30 degrees C/minute, warming to the growth temperature, passing hydrogen at a flow rate of 10-45 sccm, performing redox reaction for 20-40 minutes, passing methane at a flow rate of 5-150 sccm and hydrogen at a flow rate of 5-150 sccm into the quartz tube to grow graphene for 1-20 minutes, stop passing methane and hydrogen after growing, cooling the tube furnace to 200 degrees C at a cooling rate is 20-200 degrees C/minute, obtaining copper alloy composite powder particles uniformly coated with graphene, (2) adding the composite powder particles obtained in step (1) into a cemented carbide mold, pressing at 200-300 MPa pressure, obtaining copper/graphene composite block blanks, feeding the obtained copper/graphene composite block blank into a tube furnace and sintering under the protection of an inert gas atmosphere, passing nitrogen at a flow rate of 150-200 sccm, sintering at 1000-1200 degrees C by heating at a rate of 8-10 degrees C/minute for 2-4 hour, and cooling to room temperature with the furnace.