| 引用本文: | 薛宗伟,王黎东,杨丛涛,费维栋.一种新的β-锂霞石增强铜基复合材料热性能[J].材料科学与工艺,2010,18(2):225-228.DOI:10.11951/j.issn.1005-0299.20100217. |
| XUE Zong-wei,WANG Li-dong,YANG Cong-tao,FEI Wei-dong.Thermal properties of Cu matrix composite containing β-eucryptite particle[J].Materials Science and Technology,2010,18(2):225-228.DOI:10.11951/j.issn.1005-0299.20100217. |
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| 摘要: |
| 采用热压烧结工艺成功制备了一种新的β-锂霞石增强铜基复合材料.利用扫描电镜和透射电镜对复合材料的微观组织进行了分析,并对不同体积分数复合材料的致密性,热膨胀性能和热传导性能进行了测试.结果表明:β-锂霞石颗粒在铜基体中分布均匀,界面清晰,不发生界面反应;体积分数对复合材料致密性、热膨胀系数和热导率有明显影响,当β-锂霞石颗粒体积分数超过40%时,复合材料的致密性有明显下降,热膨胀系数在(9～15.4)×10-6/K,同时热导率在50～170W/m·K. |
| 关键词: β-锂霞石 铜基复合材料 热压烧结 热膨胀系数 |
| DOI：10.11951/j.issn.1005-0299.20100217 |
| 分类号:TB333 |
| 基金项目:国家自然科学基金资助项目(50801016) |
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| Thermal properties of Cu matrix composite containing β-eucryptite particle |
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XUE Zong-wei1, WANG Li-dong1, YANG Cong-tao2, FEI Wei-dong1
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1.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China;2.Harbin DongDa Highmateriaestock Ltd. ,Harbin 150060,China
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| Abstract: |
| A new kind of copper matrix composites with different volume fractions of β-eucryptite (Euc) particles was successfully fabricated by hot-pressed sintering. The microstructure of Euc/Cu composites was studied by scanning electron microscope and transmission electron microscope. The thermal physical properties of Euc/Cu composites were analyzed by means of thermal dilatometer and thermal conductivity tester. Results show that the effects of volume fraction of β-eucryptite particles on the thermal expansion coefficient and thermal conductivity of the composites are significant. When the volume fraction of β-eucryptite particles is more than 40% ,the compactness of Euc/Cu composites decreases obviously. The thermal expansion coefficient of the composites is in the range of (9-15. 4) × 10-6 /K,which is much lower than that of copper,and thermal conductivity of the composites is 50-170 W/m·K. |
| Key words: β-eucryptite copper matrix composite hot-pressed sintering thermal expansion coefficient |
