The influence of matrix alloy on the microstructure and properties of (flake graphite + diamond)/Cu composites by hot pressing
The influence of matrix alloy on the microstructure and properties of (flake graphite + diamond)/Cu composites by hot pressing
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DOI：
10.1016/j.jallcom.2015.08.191
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发表时间：
2015-12
影响因子：
6.2
通讯作者：
S. Ren;Qingnan Hong;Jian-hao Chen;Xin-Bo He;X. Qu
中科院分区：
文献类型：
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作者：
S. Ren;Qingnan Hong;Jian-hao Chen;Xin-Bo He;X. Qu
采用粉末热压工艺制备了片状石墨和金刚石颗粒增强铜基复合材料。在本文中，我们评估的颗粒尺寸和粉末成分的原料对（Gf+金刚石）/铜复合材料的显微组织和热性能的影响。我们的研究结果表明，具有接近金刚石尺寸的小颗粒尺寸的Cu粉末有益地提高了制备的复合材料的性能，因为它们改善的流动性允许在压制期间片状石墨的平行排列。最佳的铜粉成分具有与金刚石和鳞片石墨的总体积相等的基体合金体积。此外，我们比较了实验测定的热导率与理论计算值。
Cu matrix composites reinforced with flake graphite and diamond particles were prepared by a powder hot pressing process. In this paper, we assess the influence of particle size and the powder composition of the raw material on the microstructure and thermal properties of (Gf+ Diamond)/Cu composites. Our results show that Cu powders with small particle sizes that are close to the size of the diamond beneficially increase the performance of prepared composites because their improved flowability allows parallel arrangement of the flake graphite during pressing. The optimum Cu powder composition has an equal volume of the matrix alloy to the combined volume of diamond and flake graphite. Additionally, we compared the experimentally determined thermal conductivity with the theoretically calculated value.