Microstructure and Seebeck Coefficient of SiC-B4C Eutectic Ceramics

Takashi Goto, Eiji Ito, Toshio Hirai

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

SiC-B4C composites were prepared by arc melting in argon atmosphere using SiC and B4C powders. Uniform lamella texture indicating eutectic reaction was observed at msiC(SiC molar content)= 0.45 to 0.5. The lowest melting temperature (eutectic temperature) was about 2600K. The lattice parameters of SiC and B4C phases were almost in agreement with those of starting powders. The densities of composites nearly agreed with those calculated from the volume content of each phase. The Seebeck coefficients (a) of SiC-B4C composites increased with increasing temperature in the range between 400 and 1200K. The SiC-B4C composite of mSic= 0.4 (near the eutectic composition) showed the greatest a values (e.g. a= 750μV/K at 1050K).

Original languageEnglish
Pages (from-to)1304-1307
Number of pages4
Journaljournal of the japan society of powder and powder metallurgy
Volume41
Issue number11
DOIs
Publication statusPublished - 1994

ASJC Scopus subject areas

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

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