アーク溶解法によるB_4C-TiB_2系複合セラミックスの作製とその熱電性能 Preparation of B_4C-TiB_2 System Composites by Arc Melting and their Thermoelectric Properties

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B<SUB>4</SUB>C-TiB<SUB>2</SUB> quasi-binary composites were prepared by arc melting in argon atmosphere using B<SUB>4</SUB>C and TiB<SUB>2</SUB> powders. Uniform lamella texture indicating eutectic reaction was observed at 25mol%TiB<SUB>2</SUB> in the quasi-binary system. The electrical conductivity of the B<SUB>4</SUB>C-TiB<SUB>2</SUB> composites significantly increased with increasing TiB<SUB>2</SUB> content. The thermal conductivity (κ) of the composites containing 2mol%TiB<SUB>2</SUB> was slightly smaller than that of B<SUB>4</SUB>C, but the κ values increased with increasing TiB<SUB>2</SUB> content at more than 6mol%. The Seebeck coefficient of B<SUB>4</SUB>C-TiB<SUB>2</SUB> composites showed maxima at 6mol%TiB<SUB>2</SUB>. The thermoelectric figure-of-merit (Z) values exponentially increased with increasing temperature, showing maxima at 6mol%TiB<SUB>2</SUB>. The greatest ZT values obtained in the present study was 0.55 at T=1100K for the composite containing 6mol%TiB<SUB>2</SUB>.

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 44(1), 60-64, 1997-01-15

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002013292
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4118700
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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