Crack healing in liquid-phase-pressureless-sintered silicon carbide-aluminum nitride composites

Giuseppe Magnani, Leandro Beaulardi, Alida Brentari, Takehiro Toyoda, Koji Takahashi

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Crack healing in liquid-phase-pressureless-sintered SiC-AlN composites was investigated by introducing cracks into specimens and subsequently heat-treating the specimens. It was observed that cracks were healed and the strength was recovered. Cracks were filled with silica or mullite produced by the oxidation of the composites. It was shown that the healing temperature could be fixed in the range 1100-1300 °C and that large cracks up to about 300 μm could be healed completely. Our results imply that a simple oxidation heat-treatment can improve the reliability of silicon carbide-aluminum nitride components. © 2009 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)769 - 773
Number of pages5
JournalJournal of the European Ceramic Society
Volume30
Issue number3
DOIs
Publication statusPublished - Feb 2010
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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