Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of Additive Composition on Fracture Toughness of In Situ-Toughened SiC−Si3N4 Composites

  • Lee, Young-Il (Department of Materials Science and Engineering, The University of Seoul) ;
  • Kim, Young-Wook (Department of Optometry and Vision Science, Dongnam Health College)
  • Published : 2007.04.30
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Abstract

Effect of additive composition on fracture toughness of in situ-toughened $SiC-Si_3N_4$ composites was investigated for five different additive compositions. The highest toughness $(6.4MPa{\cdot}m^{1/2})\;in\;SiC-Si_3N_4$ composites investigated herein was obtained when an Y-Mg-Si-Al-O-N oxynitride glass was used as a sintering additive. The improvement in fracture toughness was produced by enhanced bridging and deflection by $Si_3N_4$ grains.

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References

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