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Development and Application of High Performance Thermoelectric Materials by Powder Metallurgical Procedure Using Mechanical Alloying.

Research Project

Project/Area Number 06555212
Research Category

Grant-in-Aid for Scientific Research (A)

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

Principal Investigator

NAGAI Hiroshi  Osaka University, Materials Sci.and Eng.Professor, 工学部, 教授 (80029206)

Co-Investigator(Kenkyū-buntansha) KATSUYAMA Shigeru  Osaka University, Mat.Sci.and Eng, Res.Assistant, 工学部, 助手 (00224478)
MAJIMA Kazuhiko  Osaka University, Mat.Sci.and Eng, Associate.Prof., 工学部, 助教授 (60029270)
Project Period (FY) 1994 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥14,100,000 (Direct Cost: ¥14,100,000)
Fiscal Year 1996: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1995: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1994: ¥11,000,000 (Direct Cost: ¥11,000,000)
KeywordsThermoelectric materials / beta-FeSi_2 / mechanical alloying / nano-composite / thermoelectric power / electrical resistivity / thermal conductivity / powder metallurgy / メカニカルアイロニング / 粉末冶金 / 焼結材料
Research Abstract

The performance of the thermoelectric materials is represented by the equation of Z=Q^2/rhokappa, where Q is thermoelectric power, rho is electrical resistivity, and kappa is thermal conductivity.
The results obtained are as follows :
1) Dispersion of epsilon-phase and ZrSi (metallic phase) or SiC (insulator) by mechanical alloying (MA) improved the thermoelectric properties of beta-FeSi_2. It was found that the dispersion of SiC particles decreased the grain size of beta-FeSi_2 and thermal conductivity, kappa, and the dispersion of metallic phases decreased the electrical resistivity, rho.
2) beta-FeSi_2 with dispersion of fine SiC particles (20-30nm) was obtained by MA of FeSi_2 with Si and carbon particles. Dispersion of SiC fine particles increased the performance of beta-FeSi_2 by decreasing thermal conductivity kappa without changes in thermoelectric power Q and electrical resistivity rho.
3) Addition of Zr significantly increased the themoelectrical performance of beta-FeSi_2 by decreasing the electrical resistivity especially at high temperatures.

Report

(4 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • 1994 Annual Research Report
  • Research Products

    (31 results)

All Other

All Publications (31 results)

  • [Publications] 永井 宏: "β-FeSi_2焼結体の熱電特性に及ぼすCo, Ni添加の効果" 粉体および粉末治金. 41・5. 560-564 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 永井 宏: "β-FeSi_2の熱電特性に及ぼすMGの効果" 粉体および粉末治金. 41・5. 565-569 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 永井 宏: "Effects of MA on the Pretaration and Thermoelectric Properties of β-FeSi_2." Materials Transaction JIM. 36・2. 365-372 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 永井 宏: "MG法によるCu添加β-FeSi_2焼結体の作製と熱電特性" 粉体および粉末治金. 42・2. 151-155 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 永井 宏: "n型およびp型β-FeSi_2の熱電特性に及ぼすCu添加の影響" 粉体および粉末治金. 42・11. 1323-1327 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 永井 宏: "n型Fe_<0.98>Co_<0.02>Si_2の熱電特性に及ぼすAl添加の影響" 粉体および粉末治金. 42・11. 1328-1332 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 永井 宏: "MA法によりSiCを分散したβ-FeSi_2の熱電特性" 粉体および粉末治金. 43・5. 608-612 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 永井 宏: "β-FeSi_2の熱電特性に及ぼすTi, Zr, Nb添加の影響" 粉体および粉末治金. 44・1. 34-38 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 勝山 茂: "CoSb_3の熱電特性に及ぼすMGの効果" 粉体および粉末治金. 44・1. 29-33 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 永井 宏: "メカニカルアロイング法を活用したFeSi_2系熱電変換材料の高性能化" まてりあ. 35・9. 952-955 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 永井 宏: "メカニカルアロイング法を活用した各種機能性材料の高性能化" 金属. 65・11. 1037-1044 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Nagai: "The Effect of Co ans Ni Doping on the Thermoelectric Properties of Sintered beta-FeSi_2" J.Jpn.Soc.Powder & Powder Met.41(5). 560-564 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Nagai: "Effect of Mechanical Grinding on the Thermoelectric Properties of beta-FeSi_2" J.Jpn.Soc.Powder & Powder Met.41(5). 565-569 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Nagai: "Effects of Mechanical Alloying and Grinding on Preparation and Thermoelectric Properties of beta-FeSi_2." Mater.Trans.JIM. 36(2). 365-372 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] "Preparation and Thermoelectric Properties of Sintered beta-FeSi_2 doped with Cu by MG." J.Jpn.Soc.Powder & Powder Met.42(2). 151-155 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Nagai: "Effect of Cu Addition on the Thermoelectric Properties of n-type and p-type beta-FeSi_2." J.Jpn.Soc.Powder & Powder Met.42(11). 1323-1327 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Nagai: "Effect of Al Addition on the Thermoelectric Properties of n-type Fe_<0.98>Co_<0.02>Si_2." J.Jpn.Soc.Powder & Powder Met.42(11). 1328-1332 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Nagai: "Thermoelectric Properties of FeSi_2 with SiC Dispersion Prepared by Mechanicalk Alloying." J.Jpn.Soc.Powder & Powder Met.43(5). 608-612 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Nagai: "Effect of Ti, Zr and Nb Addition on Thermoelectric Properties of beta-FeSi_2." J.Jpn.Soc.Powder & Powder Met.44(1). 34-38 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Katsuyama: "Effect of MG on the Thermoelectric Properties of CoSb_3." J.Jpn.Soc.Powder & Powder Met.44(1). 29-33 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Nagai: "Preparation of High Performane FeSi_2 Thermoelectric Material by using Mechanical Alloying." Materia Japan. 35(9). 952-955 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Nagai: "Preparation of Various High Performance Functional Materials by using Mechanical Alloying." KINZOKU. 65(11). 1037-1044 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 永井宏: "MA法によりSiCを分散したβ-FeSi_2の熱電特性" 粉体および粉末冶金. 43. 608-612 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 永井宏: "β-FeSi_2の熱電特性に及ぼすTi,ZrおよびNb添加の影響" 粉体および粉末冶金. 44. 34-38 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 永井宏: "Effects of MA on the Preparation and Thermoelectric Properties of β-FeSi_2" Materials Transaction JIM. 36. 365-372 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 永井宏: "MG法によるCu添加β-FeSi_2焼結体の作製と熱電特性" 粉体および粉末冶金. 42. 151-155 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 永井宏: "n型およびp型β-FeSi_2の熱電特性に及ぼすCu添加の影響" 粉体および粉末冶金. 42. 1323-1327 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 永井宏: "n型Fe_<0.98>Co_<0.02>Si_2の熱電特性に及ぼすAl添加の影響" 粉体および粉末冶金. 42. 1328-1332 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 永井 宏: "β-FeSi_2焼結体の熱電特性に及ぼすCo,Ni添加の影響" 粉体および粉末冶金. 41. 560-564 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 永井 宏: "β-FeSi_2の熱電特性に及ぼすMGの効果" 粉体および粉末冶金. 41. 565-569 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 永井 宏: "MGによるCu添加β-FeSi_2の作製と熱電特性" 粉対および粉末冶金. 42. 151-155 (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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