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用Cu、V、石墨粉末,采用真空非自耗电极电弧熔炼炉原位合成法制备Cu-VC复合材料,采用X射线衍射、扫描电镜和能谱分析仪等方法表征了Cu-VC复合材料的物相组成及微观组织,利用涡流导电仪和维氏硬度计测试了不同VC含量的Cu-VC复合材料的导电率及硬度。结果表明:采用电弧熔炼原位合成法可制备增强相唯一,界面结合较好,无污染的Cu-VC复合材料;该复合材料的硬度随VC含量的增加而增加,当VC含量达到8wt%时,VC发生严重聚集,割裂基体之间的连续性,导致材料硬度下降;材料的导电率随VC含量的增加先降低后升高。
Cu-VC composites were prepared by in-situ synthesis of Cu, V and graphite powders by vacuum non-consumable electrode arc melting furnace. The properties of Cu-VC composites were characterized by XRD, SEM and EDS. The phase composition and microstructure of Cu-VC composites with different VC contents were tested by eddy current conductivity analyzer and Vickers hardness tester. The results show that the Cu-VC composites with unique reinforcing phase, good interfacial bonding and no pollution can be prepared by in situ synthesis by arc melting. The hardness of the composites increases with the increase of VC content. When VC content reaches 8wt% , VC serious aggregation, the continuity between the splitting matrix, resulting in decreased hardness of the material; conductivity of the material with the increase of VC content first and then increased.