Preparation of B4C-TiB2 System Composites by Arc Melting and their Thermoelectric Properties.

• Goto Takashi

  Institute for Materials Research, Tohoku University

• Li Jianhui

  Institute for Materials Research, Tohoku University

• Hirai Toshio

  Institute for Materials Research, Tohoku University

Bibliographic Information

Other Title

• 熱電変換材料　アーク溶解法によるＢ４Ｃ‐ＴｉＢ２系複合セラミックスの作製とその熱電性能
• アーク ヨウカイホウ ニヨル B4C TiB2ケイ フクゴウ セラミックス ノ

Abstract

B₄C-TiB₂ quasi-binary composites were prepared by arc melting in argon atmosphere using B₄C and TiB₂ powders. Uniform lamella texture indicating eutectic reaction was observed at 25mol%TiB₂ in the quasi-binary system. The electrical conductivity of the B₄C-TiB₂ composites significantly increased with increasing TiB₂ content. The thermal conductivity (κ) of the composites containing 2mol%TiB₂ was slightly smaller than that of B₄C, but the κ values increased with increasing TiB₂ content at more than 6mol%. The Seebeck coefficient of B₄C-TiB₂ composites showed maxima at 6mol%TiB₂. The thermoelectric figure-of-merit (Z) values exponentially increased with increasing temperature, showing maxima at 6mol%TiB₂. The greatest ZT values obtained in the present study was 0.55 at T=1100K for the composite containing 6mol%TiB₂.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 44 (1), 60-64, 1997

  Japan Society of Powder and Powder Metallurgy

Keywords

• TiB<SUB>2</SUB>-B<SUB>4</SUB>C quasi-binary
• eutectic reaction
• microstructure
• arc melting
• thermoelectric properties

Details

• CRID: 1390001206306985728
• NII Article ID: 10002013292
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.44.60
• COI: 1:CAS:528:DyaK2sXht1aiurw%3D
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 4118700
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4118700
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed