Superplastic behavior of liquid-phase sintered β-SiC prepared with oxynitride glasses in an N2 atmosphere

Takayuki Nagano, Kenji Kaneko, Guo Dong Zhan, Mamoru Mitomo, Young Wook Kim

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The superplastic behavior of liquid-phase sintered β-SiC with oxynitride glasses was compared in compression and tension tests at 1973-2048 K in an N2 atmosphere. Strain hardening was observed under all experimental conditions. Stress exponents in the compression tests of SiC with different additives were about 2 in the temperature ranging from 1973 to 2023 K. Amorphous phases were observed at the grain boundaries and at multi-grain junctions in the as-sintered materials. Superplastic behavior was greatly influenced by grain growth, vaporization of grain-boundary phase and formation of crystalline phase during tensile deformation.

Original languageEnglish
Pages (from-to)263-270
Number of pages8
JournalJournal of the European Ceramic Society
Volume22
Issue number2
DOIs
Publication statusPublished - Feb 1 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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