Preparation of B-C system solid solutions by arc melting and their thermoelectric properties

Takashi Goto, Jianhui Li, Toshio Hirai

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

B-C system compounds were prepared by arc melting in argon atmosphere using B4C, B and C powders. The non-stoichiometric composition of the B-C compounds ranged between 10 and 20at%C. The maxima of the Seebeck coefficient values were observed at 20at%C (B4C), and the greatest value was 270 μV/K at 1100K. The electrical conductivity increased with increasing carbon content in general, but had minimum at 17at%C (B5C). The thermal conductivity increased with increasing carbon content. The thermoelectric figure of merit values (Z) decreased with increasing carbon content, but the Z values showed maximum at 20at%C (B4C). The greatest ZT value of B4C at 1100K was 0.15.

Original languageEnglish
Pages (from-to)306-310
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume43
Issue number3
DOIs
Publication statusPublished - 1996 Mar

Keywords

  • Arc melting
  • Boron carbide
  • High temperature
  • Non-stoichiometry
  • Thermoelectric properties

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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