Thermoelectric Properties of Sintered FeSi<SUB>2</SUB> with Microstructural Modification

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  • Ohtaki Michitaka
    Department of Materials Science and Technology, Graduate School of Engineering Sciences, Kyushu University
  • Ogura Daisuke
    Department of Materials Science and Technology, Graduate School of Engineering Sciences, Kyushu University
  • Eguchi Koichi
    Department of Materials Science and Technology, Graduate School of Engineering Sciences, Kyushu University
  • Arai Hiromichi
    Department of Materials Science and Technology, Graduate School of Engineering Sciences, Kyushu University

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Other Title
  • Thermoelectric Properties of Sintered FeSi2 with Microstructural Modification

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Description

Partial substitution of Cu, Zn, Nb, Ag, Sb, and In for Fe in FeSi2 significantly varied the structure of the sintered samples. The thermoelectric power increased with decreasing relative density of the samples, while the electrical conductivity decreased at the same time. However, microstructural modification by increasing the size of the particles composing the samples improved the thermoelectric figure of merit through increase in the thermoelectric power and decrease in the thermal conductivity without affecting the electrical conductivity.

Journal

  • Chemistry Letters

    Chemistry Letters 22 (6), 1067-1070, 1993

    The Chemical Society of Japan

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