Acquiring high electrical conductivity and good mechanical property is a key issue for Cu/CNTs composites, which affects their potential applications in electrical material field. In this study, Cr was induced in the Cu matrix to enhance the interfacial bonding. Different amounts of Cr were chosen to thoroughly investigate their effect on the interface structure, the electrical conductivity and the mechanical property. By tailoring the combined effects of good densification, uniform dispersion of CNTs, moderate amount of carbide at the Cu/CNTs interface, strong interfacial bonding force and suitable Cu matrix microstructure, the good overall performance was obtained in a (Cu-0.07 wt.%Cr)-0.5 wt.%CNTs composite. The addition of trace amounts of Cr leads to in-situ formation of an appropriate amount of nano chromium carbide (Cr₃C₂) at the Cu/CNTs interface, which improves the interface wettability and benefits the current transfer and load transfer, and hence improves the conductivity while increasing the hardness.

获得高电导率和良好的机械性能是Cu / CNTs复合材料的关键问题，这影响了它们在电气材料领域的潜在应用。在这项研究中，Cr在Cu基体中被诱导以增强界面结合。选择了不同量的铬以彻底研究其对界面结构，电导率和机械性能的影响。通过调整良好的致密性，CNT的均匀分散，Cu / CNTs界面处适量的碳化物，强大的界面结合力和合适的Cu基体微观结构的综合效果，在（Cu-0.07 wt。％ Cr）-0.5 wt。％CNTs复合材料。痕量铬的添加导致原位形成适量的纳米碳化铬（Cr在Cu / CNTs界面处的₃ C ₂），这改善了界面润湿性并有利于电流传递和负载传递，因此在提高硬度的同时改善了导电性。