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Influence of Aluminum Addition on Thermoelectric Performance of Mg2Si Compound under Air Exposure with Temperature Difference

Published online by Cambridge University Press:  16 May 2014

Takashi Itoh  and
Akira Tominaga
Takashi Itoh
Affiliation:
Materials Science and Engineering, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya 464-8603, Japan
Akira Tominaga
Affiliation:
Materials Science and Engineering, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya 464-8603, Japan
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Abstract

Dimagnesium silicide (Mg2Si) is an eco-friendly material useful for thermoelectric generation using waste heat of temperature range of 600 to 900 K. To improve the thermoelectric performance of the Mg2Si compound, we made the Al-added compounds under magnesium-rich condition (with 67.0 at% of Mg) using a liquid-solid phase reaction and using a pulse discharge sintering. The thermoelectric performance of each sample containing Al of 0 to 2.0 at% was measured during 50 h air exposure with temperature difference. The temperature difference was given by contacting the hot side of a sample with a hot plate kept at 773 K and by contacting the cold side with a heat sink with cooling fan. The electrical resistivity of the Al-free sample increased with air exposure time by internal oxidation. All the Al-added samples kept the low resistivity during the air exposure test. We confirmed the resistance to deterioration in thermoelectric performance of the Al-added samples during air exposure with temperature difference.

Keywords

energy generationcompoundthermoelectric
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1642: Symposium BB – Thermoelectric Materials—From Basic Science to Applications , 2014 , mrsf13-1642-bb03-11
Copyright
Copyright © Materials Research Society 2014 

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References

REFERENCES

Imai, Y., Watanabe, A., and Mukaida, M., J. Alloy. Compd. 358, 257–263 (2003).CrossRefGoogle Scholar
Tani, J. and Kido, H., Physica B 364, 218–224 (2005).10.1016/j.physb.2005.04.017CrossRefGoogle Scholar
Tani, J. and Kido, H., Intermetallics 15, 1202–1207 (2007).CrossRefGoogle Scholar
Sakamoto, T., Iida, T., Matsumoto, A., Honda, Y., Nemoto, T., Sato, J., Nakajima, T., Taguchi, H., and Takanashi, Y., J. Electron. Mater. 39, 1708–1713 (2010).CrossRefGoogle Scholar
Zwolenski, P., Tobola, J., and Kaprzyk, S., J. Electron. Mater. 40, 889–897 (2011).CrossRefGoogle Scholar
Xiong, K., Sobhani, S., Gupta, R. P., Wang, W., Gnade, B. E. and Cho, Kyeongjae, Mater. Res. Soc. Symp. Proc. Vol. 1329, online DOI: 10.1557/opl.2011.1239 (2011).CrossRefGoogle Scholar
Sakamoto, T., Iida, T., Kurosaki, S., Yano, K., Taguchi, H., Nishio, K., and Takanashi, Y., J. Electron. Mater. 40, 629–634 (2010).CrossRefGoogle Scholar
You, S. W., Park, K. H., Kim, I. H., Choi, S.M., Seo, W. S., and Kim, S. U., J. Electron. Mater. 41, 1675–1678 (2012).CrossRefGoogle Scholar
Battiston, S., Fiameni, S., Saleemi, M., Boldrini, S., Famengo, A., Agresti, F., Stingaciu, M., Toprak, M. S., Fabrizio, M., and Barison, S., J. Electron. Mater. 42, 1956–1959 (2013).10.1007/s11664-013-2482-6CrossRefGoogle Scholar
Tominaga, A and Itoh, T., J. Jpn. Soc. Powder Powder Metallurgy 60, 354–359 (2013).CrossRefGoogle Scholar