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在热力学计算V2O5和C粉末反应生成VC的基础上,采用原位烧结合成工艺制备Cu/VC复合材料。为研究VC含量对复合材料组织和性能的影响,用X-ray衍射仪、扫描电子显微镜(SEM)、能谱仪(EDS)表征Cu/VC复合材料的相组成及显微组织,并对硬度和电导率进行测试。结果表明:采用原位反应烧结可以成功制备出Cu/VC复合材料;随VC含量的增加,当VC的质量分数小于6%,在Cu/VC复合材料中VC呈细小均匀分布;但大于6%,VC发生明显的团聚现象;Cu/VC复合材料的电导率下降,而硬度呈先升高后降低的趋势。
Based on the thermodynamic calculation of the reaction of V2O5 and C powder to form VC, Cu / VC composite was prepared by in-situ sintering synthesis. In order to study the effect of VC content on the microstructure and properties of the composites, the phase composition and microstructure of Cu / VC composites were characterized by X-ray diffraction, scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS) And conductivity test. The results show that the Cu / VC composites can be successfully prepared by in-situ reaction sintering. With the increase of VC content, the VC content in Cu / VC composites is small and uniform when the mass fraction of VC is less than 6% , VC agglomeration phenomenon; Cu / VC composite conductivity decreased, while the hardness first increased and then decreased.