▎ 摘　　要

NOVELTY - The method involves performing high-temperature oxidation of the copper powder to generate copper oxide nanoparticles on the surface of the copper powder to obtain oxidized copper powder. The high-energy ball milling is performed on the oxidized copper powder and aluminum oxide to obtain mixed powder A. The low-speed ball milling of the mixed powder A and graphene oxide are performed to obtain mixed powder B. The thermal reduction treatment is performed on the mixed powder B to obtain a composite powder. The composite powder is subjected to spark plasma sintering to obtain a co-reinforced copper-based composite material of reduced graphene oxide and aluminum oxide. The rotation speed of the high-energy ball mill is 350 rpm to 550 rpm, and the ball milling time is 4 hours to 24 hours. The mass ratio of alumina, graphene oxide and copper powder in the composite powder is 0.2-4.6:0.1-1.7:200. USE - Preparation method of reducing graphene oxide and alumina co-reinforced copper-based composite material. ADVANTAGE - The method is configured to enable preparation of reduced graphene oxide and aluminum oxide co-reinforced copper-based composite material with excellent mechanical property and reduced plasticity. DESCRIPTION OF DRAWING(S) - The drawing shows a pictorial view of the mixed powder B prepared.