Abstract: Graphene reinforced copper matrix composites have the advantages of high strength and high conductivity, which has attracted much attention in high conductivity copper matrix composites. In order to further solve the problem of agglomeration of additional graphene and further improve the bonding between graphene and matrix, in this paper, a large area of three-dimensional continuous thin-layer graphene was in-situ grown on porous copper matrix which use acetylene as carbon source, and the bulk graphene/copper matrix composite with excellent comprehensive properties was prepared after secondary cold rolling and annealing heat treatment. The results show that with the increase of rolling times, the compactness of composites is improved, so the conductivity can be close to the pure copper, and the tensile strength can be increased by 49.5%. The graphene prepared by this method has high quality and good bonding with the matrix after rolling. The conductivity and mechanical properties of the composites with high density can also be controlled according to the process parameters, which provides a new processing idea for the preparation of graphene/copper matrix composites.
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