Effect of phase composition and microstructure to thermoelectric property of silicon borides

• Chen Lidong

  NAL-KRC

• Goto Takashi

  Tohoku University, IMR

• Li Jianhui

  Tohoku University, IMR

• Niino Masayuki

  NAL-KRC

• Hirai Toshio

  Tohoku University, IMR

Bibliographic Information

Other Title

• シリコンボライドの熱電特性に及ぼす相組成および微細構造の影響
• シリコン ボライド ノ ネツデン トクセイ ニ オヨボス ソウ ソセイ オヨビ

Abstract

Phase relations of silicon-boron system in boron-rich region were studied by solid state reaction, and the boron-rich silicon boride specimens were prepared by arc-melting and spark plasma sintering. Rhombohedral SiB_n(n=15-49) single phase and mixtures of SiB₆ and SiB_n were observed in the region B=93.7-98at% and B=86-93.7at%, respectively. The arc-melted specimens consisted of SiB_n and free Si, while no free silicon was observed in the plasma sintered specimen. The thermoelectric properties of the plasma sintered and arc-melted specimens were studied. The effects of the phase composition and microstructure on the thermoelectric properties were discussed. The thermoelectric figure of merit values (ZT) of the silicon borides increased with increasing temperature. The plasma sintered silicon boride containing 90at%B showed the largest ZT value, which reached 0.2 at 1100K.

Journal

• IEEJ Transactions on Fundamentals and Materials

  IEEJ Transactions on Fundamentals and Materials 116 (3), 248-252, 1996

  The Institute of Electrical Engineers of Japan

Keywords

• 高温熱電材料
• シリコンボライド
• 熱電変換性能指数
• アーク溶解
• プラズマ焼結

Details

• CRID: 1390001204599966336
• NII Article ID: 130006839674
• NII Article ID: 10002819141
• NII Book ID: AN10136312
• DOI: 10.1541/ieejfms1990.116.3_248
• ISSN: 13475533
• ISSN: 03854205
• NDL BIB ID: 3925960
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3925960
• Web Site: https://www.jstage.jst.go.jp/article/ieejfms1990/116/3/116_3_248/_pdf
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed