Evaluation on microstructure and dissolution behavior of SiC-AIN composites fabricated by SPS process

Keita Shirouzu, Takahiro Ohkusa, Tohru Kawamoto, Naoya Enomoto, Junichi Hojo

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9 Citations (Scopus)

Abstract

High-density SiC-AlN composites (50:50 in mol) were fabricated from powder mixtures of SiC and AlN by SPS process in the temperature range of 1800-2100°C. Relative densities of the composites increased with increasing firing temperature. It revealed that the mixed phases of 3C and 2H formed at 1800°C, 1900°C and 2000°C, and only 2H phase formed at 2050°C and 2100°C. The sintering of SiC and AlN particles proceeded hardly at 1800°C. The densely sintered SiC-AlN composites were obtained above 1900°C. At 1900°C and 2000°C, 3Css (β-SiC/AlN solid solution) and 2Hss (α-SiC/AlN solid solution) were found, in which Si-rich 2Hss and Al-rich 2Hss existed at 2000°C. Homogeneous SiC-AlN composites were obtained with graingrowth at 2100°C.

Original languageEnglish
Pages (from-to)781-785
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume116
Issue number1355
DOIs
Publication statusPublished - Jan 1 2008

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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