Fabrication and Thermoelectric Properties of Al/Mg2Si Composite Materials

Yuta Hayashibara; Kei Hayashi; Ikumi Ando; Masataka Kubouchi; Yohei Ogawa; Wataru Saito; Yuzuru Miyazaki

doi:10.2320/matertrans.E-M2018815

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Fabrication and Thermoelectric Properties of Al/Mg₂Si Composite Materials

Yuta Hayashibara, Kei Hayashi, Ikumi Ando, Masataka Kubouchi, Yohei Ogawa, Wataru Saito, Yuzuru Miyazaki

著者情報

キーワード: composite material, magnesium silicide, aluminum, microstructure, thermoelectric properties, electron carrier density, carrier mobility

ジャーナルフリー早期公開

論文ID: E-M2018815

DOI https://doi.org/10.2320/matertrans.E-M2018815

この記事には本公開記事があります。

The final version of this article is now available: Vol. 59 (2018), No. 7 pp. 1041-1045

詳細

抄録

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.

責任著者(Corresponding author)

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