The Korean Journal of Ceramics

한국세라믹학회 (The Korean Ceramic Society)
권호 표지

Effects of Sintering Additives on the Microstructure Development in Silicon Oxynitride Ceramics

  • Kim, Joosun (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Chen, I-Wei (Department of Materials Science and Engineering, University of Pennsylvania)
  • 발행 : 2000.09.01
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초록

Using a small amount of additives and amorphous Si₂N₂O powders, O-SiAlON ceramics have been hot-pressed and its microstructure and mechanical properties were investigated. Scandium oxide was demonstrated to be an effective densification additive for O-SiAlON. Amorphous Si₂N₂O was densified at relatively low temperatures and a microstructure with acicular grains was developed. Fine grains found in materials obtained from amorphous powders suggest that nucleation and crystallization of O-SiAlOH is relatively easy compared with the Si₃N₄-SiO₂reaction.

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참고문헌

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