▎ 摘　　要

Novel graphene reinforced CuCr25 matrix composites (GCMC) with high hardness and conductivity were prepared by spark plasma sintering (SPS) under high pressure and low temperature after low speed ball-milling mix. It is confirmed that the graphene remains and no new phase is found by X-ray diffraction and Raman spectroscopy. Structural characterization of GCMC was performed using field emission scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). The results show that the graphene is homogeneously distributed in matrix after the sintering process. The hardness of GCMC with 1wt% graphene sintered under 300 MPa and 600 degrees C is increased by 11.3% compared with that of CuCr25 alloys fabricated by the same method, though its conductivity is decreased by 4.2%. Compared with the CuCr25 alloys consolidated by the conventional method, the conductivity and hardness of the new-type GCMC are about 1.35 and 1.48 times higher, respectively, which indicates that the additional phase and new process all make contributions to the enhancement of GCMC.