Abstract
Cu-graphite composites play an important role as friction materials used in many fields. However, weak bonding of copper with graphite and low strength of copper are significant limitations. In this study, our focus on fabricating high-density Cu-VC-Al2O3-graphite composites by using V2AlC as a modifier for the Cu-graphite systems. The microstructure and interface properties of the composites were thoroughly examined by SEM, EDS, and XRD techniques. The results indicate the in-situ synthesis of VC and Al2O3, which exhibit good compatibility with the copper matrix in the composites. Furthermore, the formation of a VC layer facilitates enhanced interfacial bonding between the copper matrix and graphite. In addition, the resulting composite materials show desirable density and hardness, boasting a relative density of 94.5 % and a hardness of 80.6 HV.
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