SiC-B4C composites for synergistic enhancement of thermoelectric property

Masato Uehara, Ryosuke Shiraishi, Atsushi Nogami, Naoya Enomoto, Junichi Hojo

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

SiC-B4C composites were fabricated by hot pressing of β-SiC and B4C powder mixture. The Seebeck coefficient was determined at 300-900 °C in air. The SiC-B4C composites exhibited very high value. Especially, the Seebeck coefficient of SiC-30wt.%B4C composite was about 700 μ/K at 900 °C. Such a high Seebeck coefficient is very attractive. Monolithic SiC and B4C had the Seebeck coefficient of 100-400 μV/K, respectively. In SiC-B4C composite system, the Seebeck coefficient had been increased by the combination of SiC and B4C. In TEM observation, many stacking faults were observed in SiC-B4C composites. The presence of stacking faults may be one reason for the high Seebeck coefficient of SiC-B4C composite.

Original languageEnglish
Pages (from-to)409-412
Number of pages4
JournalJournal of the European Ceramic Society
Volume24
Issue number2
DOIs
Publication statusPublished - Jan 1 2004

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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