R-curve behavior of silicon nitride-titanium nitride composites

Heon Jin Choi, Kyeong Sik Cho, June Gunn Lee, Young Wook Kim

Research output: Contribution to journalArticle

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The R-curve for Si 3N 4-40 wt% TiN composites was estimated by the indentation-strength method and compared to that of monolithic Si 3N 4 with duplex microstructure. Both materials exhibited rising R-curve behavior. The Si 3N 4-TiN composites, however, displayed better damage tolerance and higher resistance to crack growth. From TEM observation, it was inferred that this superior performance of Si 3N 4-TiN composites can be attributed mainly to stress-induced microcracking at heterophase (Si 3N 4/TiN) boundaries.

Original languageEnglish
Pages (from-to)2681-2684
Number of pages4
JournalJournal of the American Ceramic Society
Issue number10
Publication statusPublished - 1997 Oct 1


All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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