Mechanical properties and oxidation resistance of Si3N4-SiC nanocomposites

Young Hag Koh, Hae Won Kim, Hyoun Ee Kim

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The addition of SiC nanoparticles and Si3N4 whiskers had significant effects on the microstructure and mechanical properties of Si3N4. Excellent flexural strength, fracture toughness, and high-temperature strength were obtained by adjusting the relative concentration of SiC nanoparticle and Si3N4 whiskers. After oxidation, the flexural strength of the nanocomposite increased by about 40% due to the crystallization of both the oxidation product and the grain boundary by the SiC nanoparticles.

Original languageEnglish
Pages (from-to)2069-2073
Number of pages5
JournalScripta Materialia
Volume44
Issue number8-9
DOIs
Publication statusPublished - 2001 May 18
Externally publishedYes

Keywords

  • Mechanical properties
  • Oxidation resistance
  • SiN whiskers
  • SiN/SiC nanocomoposite

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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