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Analysis of the Microstructure of Mg2Si Thermoelectric Devices

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Abstract

High-performance Mg2Si thermoelectric devices have been obtained by spark plasma sintering of high-purity, pre-synthesized, all-molten Mg2Si powder. We studied the effects of source powder particle size on thermoelectric performance. To improve the performance, further investigation of the microstructure of the devices is needed. In this work we studied the microstructure of grain boundaries and interfaces between electrodes and Mg2Si sintered bodies to increase understanding of Mg2Si thermoelectric devices.

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Acknowledgements

This research is partly supported by the Okayama Prefectural Government.

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Authors and Affiliations

  1. Tsuyama National College of Technology, 624-1 Numa, Tsuyama, 708-8509, Japan

    Shigeyuki Nakamura

  2. Okayama University of Science, 1-1 Ridaicho, Okayama, 700-0005, Japan

    Yoshihisa Mori & Ken’ichi Takarabe

Authors
  1. Shigeyuki Nakamura
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  2. Yoshihisa Mori
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  3. Ken’ichi Takarabe
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Correspondence to Shigeyuki Nakamura.

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Nakamura, S., Mori, Y. & Takarabe, K. Analysis of the Microstructure of Mg2Si Thermoelectric Devices. J. Electron. Mater. 43, 2174–2178 (2014). https://doi.org/10.1007/s11664-014-3000-1

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  • DOI: https://doi.org/10.1007/s11664-014-3000-1

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