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Mechanical Properties and Fracture Behavior of Mg2Si after Heat Exposure

Published online by Cambridge University Press:  22 June 2017

Takashi Nakamura ,
Ryo Inoue ,
Shuhei Hasegawa ,
Yauso Kogo  and
Tsutomu Iida
Takashi Nakamura
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1, Niijyuku, Katsushika-ku, Tokyo, Japan. 125-8585
Ryo Inoue*
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1, Niijyuku, Katsushika-ku, Tokyo, Japan. 125-8585
Shuhei Hasegawa
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1, Niijyuku, Katsushika-ku, Tokyo, Japan. 125-8585
Yauso Kogo
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1, Niijyuku, Katsushika-ku, Tokyo, Japan. 125-8585
Tsutomu Iida
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1, Niijyuku, Katsushika-ku, Tokyo, Japan. 125-8585
*
*(Email: [email protected])
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Abstract

The mechanical properties of as-sintered and heat-exposed polycrystalline Mg2Si were investigated. The strength of the as-fabricated specimen depends on the surface flaws. After heat exposure in Ar atmosphere, oxidized products formed, mainly consisting of MgO. The strength increased after the heat exposure, and the surface oxidation product filled the surface cracks. After the surface oxidation products were removed, the strength and TE properties were the same as those of the as-fabricated specimens.

Keywords

thermoelectricmicrostructurestrength
Type
Articles
Information
MRS Advances , Volume 2 , Issue 54: Energy Storage and Conversion , 2017 , pp. 3291 - 3297
Copyright
Copyright © Materials Research Society 2017 

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References

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