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首页> 外文期刊>Journal of Materials Research >Novel Cu/Si composites: A sol-gel-derived Al_2O_3 film as barrier to control interfacial reaction
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Novel Cu/Si composites: A sol-gel-derived Al_2O_3 film as barrier to control interfacial reaction

机译：新型Cu / Si复合材料：溶胶凝胶衍生的Al_2O_3膜作为控制界面反应的屏障

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摘要

Cu/Si composite may be a novel and high-performance material for electronic packaging if the advantages of copper and silicon components are preserved. Because of the severe diffusional reaction between copper and silicon at elevated temperature, efforts are impeded to achieve a bulk Cu/Si composite. Here, by coating a sol-gel-derived Al_2O_3 film on the Si particle surface, the bulk Cu/Si composites were obtained by the powder metallurgy method. In the prepared Cu/Si composite, Cu forms a continuous matrix while Si particles are homogeneously dispersed in Cu matrix. High-resolution transmission electron microscopy observation indicates that only weak interfacial reaction occurs at the Cu/Al_2O_3/Si interface and forms a narrow interfacial reaction zone. The thermal diffusivity of the composite at 25 ℃ is about 30.6 mm~2 s_(-1) over 10 times larger than that of Cu/Si material without Al_2O_3 film.
机译：如果保留铜和硅成分的优势，Cu / Si复合材料可能是用于电子封装的新型高性能材料。由于在高温下铜和硅之间的剧烈扩散反应，阻碍了实现块状Cu / Si复合材料的努力。在此，通过在Si粒子表面上涂覆源自溶胶凝胶的Al_2O_3膜，通过粉末冶金法获得块状Cu / Si复合材料。在制备的Cu / Si复合物中，Cu形成连续的基体，而Si颗粒均匀地分散在Cu基体中。高分辨率透射电镜观察表明，Cu / Al_2O_3 / Si界面仅发生弱界面反应，形成狭窄的界面反应区。该复合材料在25℃时的热扩散率约为30.6 mm〜2 s _（-1），是不具有Al_2O_3膜的Cu / Si材料的热扩散率的10倍以上。

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  • 来源
    《Journal of Materials Research》 |2010年第11期|p.2238-2244|共7页
  • 作者

    Hui Cai; Debao Tong; Yaping Wang; Xiaoping Song; Bingjun Ding;

  • 作者单位

    MOE Key Laboratory for Nonequilibriwn Synthesis and Modulation of Condensed Matter,School of Science, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China;

    rnMOE Key Laboratory for Nonequilibriwn Synthesis and Modulation of Condensed Matter,School of Science, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China;

    rnMOE Key Laboratory for Nonequilibriwn Synthesis and Modulation of Condensed Matter,School of Science, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China;

    rnMOE Key Laboratory for Nonequilibriwn Synthesis and Modulation of Condensed Matter,School of Science, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China;

    rnState Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University,Xi'an 710049, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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