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Investigation of Mg2Si formation from Si and Mg by using spark plasma sintering synthesis

Published online by Cambridge University Press:  13 March 2015

Kota Sunohara ,
Koya Arai ,
Tomoyuki Nakamura ,
Kenjiro Fujimoto ,
Yuki Yamaguchi ,
Tsutomu Iida  and
Keishi Nishio
Kota Sunohara
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-ku, Tokyo 125-8585, Japan
Koya Arai
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-ku, Tokyo 125-8585, Japan
Tomoyuki Nakamura
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-ku, Tokyo 125-8585, Japan SWCC Showa Cable Systems Co., LTD. 4-1-1 Minami-Hashimoto Chuo-Ku Sagamihara, Kanagawa, Japan
Kenjiro Fujimoto
Affiliation:
Department of Pure and Applied Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
Yuki Yamaguchi
Affiliation:
Department of Pure and Applied Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
Tsutomu Iida
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-ku, Tokyo 125-8585, Japan
Keishi Nishio
Affiliation:
Department of Materials Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-ku, Tokyo 125-8585, Japan
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Abstract

In this study, we fabricated Mg2Si from metal Mg and Si with different particle sizes (425 - 300, 300 - 180, and 75 μm or less) using spark plasma sintering (SPS) equipment. Additionally, the Mg2Si formation was investigated. A sieved Si powder was mixed with metal Mg powder in an inert gas (Ar) atmosphere. The mixture was placed in a graphite die while still in an Ar atmosphere and subjected to SPS at 923 K and 1113 K. The obtained sintering bodies were Mg2Si particles with a size of about 5 μm. Then, the sintered bodies were evaluated by X-ray diffraction (XRD). As a result, it was confirmed that generation of Mg2Si increased with decreasing Si particle size.

Keywords

thermoelectricMgSi
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1735: Symposium S/W/CC – Advanced Materials for Photovoltaic, Fuel Cell and Electrolyzer, and Thermoelectric Energy Conversion , 2015 , mrsf14-1735-cc14-06
Copyright
Copyright © Materials Research Society 2015 

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