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2009 Fiscal Year Final Research Report

High performance composite thermoelectric material with dispersed amorphous phase

Research Project

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Project/Area Number 19560729
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Material processing/treatments
Research InstitutionOsaka University

Principal Investigator

KATSUYAMA Shigeru  Osaka University, 大学院・工学研究科, 准教授 (00224478)

Project Period (FY) 2007 – 2009
Keywordsメカニカルミリング / メルトスピニング / ハーフホイスラー合金 / ゼーベック係数 / 電気抵抗率 / 熱伝導率
Research Abstract

The relationship between the microscopic structure and thermoelectric properties of half-Heusler ZrNiSn intermetallic compound was investigated. ZrNiSn_<0.98>Sb_<0.02>, which was partially substituted by Sb for Sn in ZrNiSn, was mechanically milled. The crystal grain size of the sintered body prepared from the milled powder decreased with an increase of the milling time, and the sample with a longer milling time showed a smaller thermal conductivity resulting in higher figure of merit. The reduction of the thermal conductivity was also observed in the composite sample with ZrNiSn crystal grain and ZrNi amorphous grain, and a slight increase of the figure of merit was observed. It became clear that there was a possibility of the enhancement of the figure of merit in the sample with dispersed amorphous phase.

  • Research Products

    (13 results)

All 2010 2009 2008 2007 2006

All Journal Article (6 results) (of which Peer Reviewed: 5 results) Presentation (6 results) Book (1 results)

  • [Journal Article] 溶液プロセスを利用した熱電酸化物多結晶焼結体の微細構造制御と高性能化プロセスの開発2010

    • Author(s)
      井藤幹夫、柳楽知也、勝山茂
    • Journal Title

      粉体および粉末冶金 57巻

      Pages: 224-231

    • Peer Reviewed
  • [Journal Article] Effect of mechanical milling on thermoelectric properties of half-Heusler ZrNiSn0. 98Sb0. 022010

    • Author(s)
      S. Katsuyama, T. Kobayashi
    • Journal Title

      Materials Science and Engineering B Vol.166

      Pages: 99-103

    • Peer Reviewed
  • [Journal Article] 環境にやさしい熱電材料2009

    • Author(s)
      勝山茂
    • Journal Title

      金属 79巻

      Pages: 223-230

  • [Journal Article] ynthesis of Ca3Co4O9 ceramics by polymerized complex and hydrothermal hot-pressing processes and investigation of its thermoelectric properties2008

    • Author(s)
      S. Katsuyama, Y. Takiguchi, M. Ito
    • Journal Title

      J. Mat. Sci. Vol.43

      Pages: 3553-3559

    • Peer Reviewed
  • [Journal Article] Synthesis of Ca3Co4O9 ceramics by citric acid complex and hydrothermal hot-pressing and investigation of its thermoelectric properties2007

    • Author(s)
      S. Katsuyama, Y. Takiguchi, M. Ito
    • Journal Title

      Materials Transactions, Vol.48

      Pages: 2073-2078

    • Peer Reviewed
  • [Journal Article] Thermoelectric properties of half-Heusler alloys Zr1-xYxNiSn1-ySby2007

    • Author(s)
      S. Katsuyama, R. Matsuo, M. Ito
    • Journal Title

      J. Alloys and Compounds Vol.428

      Pages: 262-267

    • Peer Reviewed
  • [Presentation] YbAl3の熱電特性に及ぼす元素添加効果に及ぼす元素添加効果2009

    • Author(s)
      勝山茂、田中敏宏
    • Organizer
      日本金属学会2009年秋期大会
    • Place of Presentation
      京都大学
    • Year and Date
      2009-09-16
  • [Presentation] Cu3Au型構造を持つ希土類ヘビーフェルミオン金属間化合物の熱電特性に及ぼす元素添加効果2009

    • Author(s)
      勝山茂、田中敏宏
    • Organizer
      日本熱電学会学術講演会
    • Place of Presentation
      東北大学
    • Year and Date
      2009-08-10
  • [Presentation] ハーフホイスラー合金ZrNiSnの熱電特性に及ぼす元素置換およびメカニカルミリングの効果2008

    • Author(s)
      勝山茂、小林哲也
    • Organizer
      日本熱電学会学術講演会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2008-08-22
  • [Presentation] ハーフホイスラー合金ZrNiSnの熱電特性に及ぼすメカニカルミリングの効果2008

    • Author(s)
      勝山茂、小林哲也
    • Organizer
      粉体粉末冶金協会平成20年春季大会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2008-05-28
  • [Presentation] ハーフホイスラー合金ZrNiSn0. 98Sb0. 02の熱電特性に及ぼすメカニカルミリングの効果2008

    • Author(s)
      勝山茂、小林哲也
    • Organizer
      日本金属学会2008年春期大会
    • Place of Presentation
      武蔵工業大学
    • Year and Date
      2008-03-27
  • [Presentation] Synthesis of Ca3Co4O9 ceramics by polymerized complex and hydrothermal hot-pressing processes and investigation of its thermoelectric properties2006

    • Author(s)
      S. Katsuyama, Y. Takiguchi, M. Ito
    • Organizer
      26th International Conference on Thermoelectrics
    • Place of Presentation
      Cheju, South Korea
    • Year and Date
      2006-07-05
  • [Book] 熱電変換技術ハンドブック2008

    • Author(s)
      勝山茂, ほか
    • Total Pages
      67-74
    • Publisher
      エヌ・ティー・エス

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Published: 2011-06-18   Modified: 2016-04-21  

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