Microstructure and the Anisotropic Thermoelectric Properties of .BETA.-FeSi2 Sintered under High-Pressure.

• Takizawa Hirotsugu

  Dept. Mater. Chem., Graduate School of Eng., Tohoku Univ.,

• Yamamoto Kenta

  Inst. Adv. Mater. Proc., Tohoku Univ.

• Endo Tadashi

  Dept. Mater. Chem., Graduate School of Eng., Tohoku Univ.,

• Shimada Masahiko

  Inst. Adv. Mater. Proc., Tohoku Univ.

Bibliographic Information

Other Title

• 熱電変換材料　超高圧焼結により作製したβ‐ＦｅＳｉ２系熱電材料の微細構造と熱電特性の異方性
• チョウコウアツ ショウケツ ニ ヨリ サクセイシタ ベータ FeSi2ケイ ネ

Abstract

β-FeSi₂ was sintered under high-pressure/ temperature conditions of 3 GPa and 700-1400°C for 30 min using a belt-type high-pressure equipment. The material showed anisotropy due to heterogeneous distribution of pressure, however, the X-ray diffraction analysis did not reveal crystallographic orientation. The microstructure showed grain orientation along the direction perpendicular to the pressing direction. Such orientation was remarkable in the sample solidified from the melt. It was suggested that the development of microstructure was important factor in optimizing the thermoelectric properties. The formation and the phase stability of β-FeSi₂ under high-pressure condition were also discussed.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 44 (1), 39-43, 1997

  Japan Society of Powder and Powder Metallurgy

Keywords

• β-FeSi<SUB>2</SUB>
• high-pressure sintering
• microstructure
• anisotropy

Details

• CRID: 1390282681283706496
• NII Article ID: 10002013226
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.44.39
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 4118696
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4118696
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed