Graphene reinforced copper matrix (G/Cu) composites were prepared by temperature-programmed sintering of their mixtures in molds under pressure. The effects of graphene content on the microstructure, and electrical, thermal, mechanical and corrosion properties of the G/Cu composites were investigated. Results show that the hardness, tensile strength, yield strength, thermal and electrical conductivities, and corrosion resistance of the composites all reached maxima at a graphene content of 0.5 wt.%. The addition of graphene increased the thermal and electrical conductivities, tensile and yield strengths, and hardness of the composites, but led to defect formation in the graphene due to the thermal expansion mismatch between graphene and copper. Therefore, an optimal graphene content was needed to obtain the best improvement of these properties. Tafel and electrochemical impedance tests using the composite as the working electrode, Pt as the counter electrode and a saturated calomel electrode as a reference electrode showed that the composite with a graphene content of 0.5 wt% had the lowest corrosion current of 3.45×10⁻⁶ μA/cm² and the highest charge transfer resistance of 1705 Ω·cm².

石墨烯增强铜基（G / Cu）复合材料是通过在模具中在压力下对混合物进行温度编程烧结来制备的。研究了石墨烯含量对G / Cu复合材料的微观结构以及电，热，机械和腐蚀性能的影响。结果表明，在石墨烯含量为0.5重量％时，复合材料的硬度，拉伸强度，屈服强度，导热性和导电性以及耐腐蚀性均达到最大值。石墨烯的添加增加了复合材料的导热性和导电性，拉伸强度和屈服强度以及硬度，但是由于石墨烯和铜之间的热膨胀失配，导致石墨烯中形成缺陷。因此，需要最佳的石墨烯含量以获得这些性能的最佳改善。^-6 μA/厘米²和1705Ω的最高电荷转移电阻·厘米²。