Fracture strengths and microstructures of Si3N4/SiC nanocomposites fabricated by in-situ process

Yoon Suk Oh, Chang Sam Kim, Dae Soon Lim, Deock Soo Cheong

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Si3N4/SiC nanocomposites was prepared by in-situ process using commercial phenolic resin. Microstructures were examined by Transmission Electron Microscopy and Scanning Electron Microscopy. The room and high temperature fracture strengths of Si3N4/SiC nanocomposites have been studied using the 3-point bending test. The fracture strength of Si3N4/SiC nanocomposites with Al2O3 and Y2O3 doped samples was about 1100 MPa at room temperature. The fracture strength of Si3N4/SiC nanocomposites with only Y2O3 doped samples was about 1100 MPa at room temperature and 800 MPa at 1400°C. The grain boundary phases formed during sintering process were examined by X-ray Diffraction method.

Original languageEnglish
Pages (from-to)2079-2081
Number of pages3
JournalScripta Materialia
Volume44
Issue number8-9
DOIs
Publication statusPublished - 2001 May 18

Keywords

  • In-Situ processing
  • Phenolic resin
  • SiN/SiC nanocomposites
  • Strength

ASJC Scopus subject areas

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

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