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对 Cu O-Al体系进行热力学和动力学分析的基础上 ,采用将 Cu O和 Al粉末压块的方法加入到真空条件的 Cu液中使其发生化学反应 ,生成 Al2 O3增强颗粒而获得复合材料。对复合材料进行了扫描电镜观察及 X射线衍射分析 ,并测试了 Al2 O3含量对复合材料电导率的影响。结果表明 ,内氧化法是制备 Al2 O3/ Cu复合材料较理想的方法 ;Al2 O3/ Cu复合材料用于高强度高导电领域时 Al2 O3含量应小于 1 .85 wt%
Based on the thermodynamic and kinetic analysis of the Cu O-Al system, the Cu O and Al powders were pressed into the Cu solution in a vacuum condition to make them react chemically to form Al 2 O 3 reinforced particles to obtain a composite material . The composite was observed by scanning electron microscopy and X-ray diffraction. The influence of Al 2 O 3 content on the electrical conductivity of the composites was also tested. The results show that the internal oxidation is an ideal method for preparing Al 2 O 3 / Cu composites. The content of Al 2 O 3 should be less than 1.85 wt% when Al 2 O 3 / Cu composites are used in the field of high strength and high conductivity.