ホットプレスと常圧焼成の組み合わせにより作製したBi_2Te_<2.85>Se_<0.15>焼結体の微構造および熱電特性 Microstructure and Thermoelectric Properties of n-type Bi_2Te_<2.85>Se_<0.15> Sintered Materials Prepared by Combination of Pressureless Sintering and Hot Pressing

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n-type Bi<SUB>2</SUB>Te<SUB>2.85</SUB>Se<SUB>0.15</SUB> sintered materials were prepared by hot pressing alone and combination of pressureless sintering and hot pressing, and the effect of pressureless sintering on the microstructures and thermoelectric properties of the sintered materials were studied. Samples hot pressing after pressureless sintering showed greater power factors in comparison with samples prepared by hot pressing alone and pressureless sintering after hot pressing. This is considered to be attributed to increased mobility caused by increased in grain size and anisotropic texture due to pressureless sintering. Thermal conductivity also showed a little higher value due to an increase in both carrier and lattice thermal conductivities. These thermoelectric properties did not exhibit a dependency on the pressureless sintering period. Consequently, the samples prepared by hot pressing after pressureless sintering showed the highest figure of merit of <i>Z</i> =2.89×10<SUP>-3</SUP>K<SUP>-1</SUP> for a pressureless sintering period of 7.2 ks.

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  • 日本金屬學會誌 = Journal of the Japan Institute of Metals

    日本金屬學會誌 = Journal of the Japan Institute of Metals 68(7), 482-489, 2004-07-20

    公益社団法人 日本金属学会

参考文献:  23件中 1-23件 を表示

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各種コード

  • NII論文ID(NAID)
    10013338213
  • NII書誌ID(NCID)
    AN00062446
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00214876
  • NDL 記事登録ID
    7046714
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-314
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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