| Si含量对Si/Al复合材料组织及性能的影响(英文) |
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| 引用本文： | 翟蔚宸,张朝晖,王富耻,神祥博,李树奎,王鲁.Si含量对Si/Al复合材料组织及性能的影响(英文)[J].中国有色金属学会会刊,2014,24(4):982-988. |
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| 作者姓名： | 翟蔚宸 张朝晖 王富耻 神祥博 李树奎 王鲁 |
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| 作者单位： | [1]北京理工大学材料学院,北京100081 [2]冲击环境材料技术国家级重点实验室,北京100081 |
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| 基金项目： | Project （51374039） supported by the National Natural Science Foundation of China; Project （613135） supported by National Security Basic Research Program of China |
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| 摘 要： | 采用放电等离子烧结(SPS)技术制备不同Si含量的电子封装用Si/Al复合材料,测试复合材料的性能,包括密度、热导率、热膨胀系数及弯曲强度;进行成分及断口分析,研究Si含量对Si/Al复合材料微观组织及热、力学性能的影响规律。结果表明:Si/Al复合材料由Si、Al组成,Al均匀分布于Si晶粒之间;随着Si含量的降低,Si/Al复合材料的相对密度不断增大,当Si含量为50%(体积分数)时,复合材料的相对密度达到98.0%;复合材料的热导率、热膨胀系数及弯曲强度均随着Si含量的增加而减小,当Si含量为60%(体积分数)时,复合材料具有最佳的热导率、热膨胀系数及强度匹配。
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| 关 键 词： | 放电等离子烧结 Si/Al复合材料 热导率 热膨胀系数 弯曲强度 |
| 收稿时间： | 6 March 2013 |
Effect of Si content on microstructure and properties of Si/Al composites |
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| Wei-chen ZHAI,Zhao-hui ZHANG,Fu-chi WANG,Xiang-bo SHEN,Shu-kui LEE,Lu WANG.Effect of Si content on microstructure and properties of Si/Al composites[J].Transactions of Nonferrous Metals Society of China,2014,24(4):982-988. |
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| Authors: | Wei-chen ZHAI Zhao-hui ZHANG Fu-chi WANG Xiang-bo SHEN Shu-kui LEE Lu WANG |
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| Affiliation: | 1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 China; 2. National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing 100081, China) |
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| Abstract: | Si/Al composites with different Si contents for electronic packaging were prepared by spark plasma sintering （SPS） technique. Properties of the composites were investigated, including density, thermal conductivity, coefficient of thermal expansion and flexural strength. The effects of the Si content on microstructure and thermal and mechanical properties of the composites were studied. The results show that the Si/Al composites consist of Si and Al components and Al uniformly distributes among Si grains. The relative density of the Si/Al composites gradually increases with the decrease of Si content and reaches 98.0% when the Si content is 50%. The thermal conductivity, the coefficient of thermal expansion and the flexural strength of the composite all decrease with the increase of the Si content, and an optimal matching of them is obtained when the Si content is 60%（volume fraction）. |
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| Keywords: | spark plasma sintering Si/Al composite thermal conductivity coefficient of thermal expansion flexural strength |
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