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Diamond composites of high thermal conductivity and low dielectric loss tangent

机译：高导热率和低介电损耗切线的金刚石复合材料

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摘要

Diamond-CaMg(CO_3)_2 and diamond-CaCO_3 compacts were produced. Maximum values of high thermal conductivity of 540 W/m K, electrical resistivity of 2·10~(11) ohm cm, dielectric constant of 47, and dielectric loss tangent of 5.8 • 10~(-3) at 10~6 Hz were achieved. The composites based on diamonds were sintered at a high pressure of 8.0 GPa and temperature of 2100 °C and were characterised by high ratios of direct bonding between the diamond grains. Diamond grain size varied from 12 to 45 μm. The CaCO_3 content of the diamond-CaCO_3 composites and the CaMg(CO_3)_2 content of the diamond-CaMg(CO_3)_2 composites were 8.5 vol% and 8.8 vol%, respectively. The materials developed are recommended for use as heat sinks in a wide range of electronic devices.
机译：制造了钻石 - Camg（CO_3）_2和钻石 - Caco_3压缩。 高导热率的最大值为540 w / m k，电阻率为2·10〜（11）欧姆厘米，介电常数为47，介电损耗切线为5.8•10〜（3），在10〜6 hz时 实现。 基于金刚石的复合材料在8.0GPa的高压下烧结，温度为2100℃，其特征在于金刚石颗粒之间的直接键合的高比率。 金刚石粒径从12到45μm变化。 金刚石-Caco_3复合材料的CaCO_3含量和金刚石 - CAMG（CO_3）_2复合材料的CACG（CO_3）_2含量分别为8.5体积％和8.8体积％。 建议使用的材料用作各种电子设备中的散热器。

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  • 来源
    《Materials Science and Engineering》 |2021年第7期|115171.1-115171.5|共5页
  • 作者

    A.S. Osipov; P. Klimczyk; P. Rutkowski; Y.A. Melniychuk; L.O. Romanko; M. Podsiadlo; I.A. Petrusha; L. Jaworska;

  • 作者单位

    Institute for Superhard Materials National Academy of Sciences of Ukraine 2 Avtozavodskya St Kyiv 04074 Ukraine;

    Lukasiewicz Research Network - Krakow Institute of Technology Zakopianska 73 Krakow 30-418 Poland;

    AGH University of Science and Technology 30 al. A. Mickiewicza Krakow 30-059 Poland;

    Institute for Superhard Materials National Academy of Sciences of Ukraine 2 Avtozavodskya St Kyiv 04074 Ukraine;

    Institute for Superhard Materials National Academy of Sciences of Ukraine 2 Avtozavodskya St Kyiv 04074 Ukraine;

    Lukasiewicz Research Network - Krakow Institute of Technology Zakopianska 73 Krakow 30-418 Poland;

    Institute for Superhard Materials National Academy of Sciences of Ukraine 2 Avtozavodskya St Kyiv 04074 Ukraine;

    AGH University of Science and Technology 30 al. A. Mickiewicza Krakow 30-059 Poland;

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  • 正文语种 eng
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  • 关键词

    Diamond composite; High pressure; Thermal conductivity; Dielectric constant; Dielectric loss tangent;

    机译：金刚石复合;高压力;导热系数;介电常数;介电损耗切线;

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