原位反应制备Cu/VC复合材料

Cu/VC composite prepared by in situ synthesis reaction

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 thermodynamics analysis for in situ reaction between V2O5 and C powders,the Cu/VC composites were insitu synthesized by synthesis method. The effect of VC content on the microstructure and properties of Cu/VC composite was studied. The phase constituent and microstructure of the Cu/VC composite were characterized by X-ray diffractometer,scanning electron microscope（SEM）equipped with energy disperse spectroscopy（EDS）,and the hardness and electrical conductivity were tested as well. The results show that Cu/VC composites can be synthesized by in situ synthesis method. When the mass fraction of VC content is less than 6%,fine VC particles are uniformly distributed in the copper matrix,while the obvious VC aggregation occurs if VC content is above 6%. With the increase of VC content,the electrical conductivity of Cu/VC composite decreases progressively,but the hardness of Cu/VC composite increases at first and then decreases.