Fabrication and Thermoelectric Properties of Al/Mg₂Si Composite Materials

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  • Hayashibara Yuta
    Course of Applied Physics, School of Engineering, Tohoku University
  • Hayashi Kei
    Department of Applied Physics, Graduate School of Engineering, Tohoku University
  • Ando Ikumi
    Department of Applied Physics, Graduate School of Engineering, Tohoku University
  • Kubouchi Masataka
    Department of Applied Physics, Graduate School of Engineering, Tohoku University
  • Ogawa Yohei
    Department of Applied Physics, Graduate School of Engineering, Tohoku University
  • Saito Wataru
    Department of Applied Physics, Graduate School of Engineering, Tohoku University
  • Miyazaki Yuzuru
    Department of Applied Physics, Graduate School of Engineering, Tohoku University

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タイトル別名
  • Fabrication and Thermoelectric Properties of Al/Mg<sub>2</sub>Si Composite Materials

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<p>Mg2Si has attracted interest as a potential thermoelectric material that can convert waste heat into electricity. To improve thermoelectric performance of Mg2Si, Al/Mg2Si composite materials with nominal composition of xAl/Mg2Si (x = 0.25, 0.5, 0.75, 1.0, or 1.5) were fabricated, i.e., an Al metal phase was introduced to an Mg2Si matrix. Reflecting an increase in the electrical conductivity and a decrease in the Seebeck coefficient with increasing x, the power factor was successfully enhanced by the incorporation of the Al phase. The increase in electrical conductivity was discussed in terms of electron carrier density and carrier mobility.</p>

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 59 (7), 1041-1045, 2018-07-01

    公益社団法人 日本金属学会

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