Mechanical and thermal properties of hot-pressed Si3N4 with added AlN

R. J. Sung, S. W. Lee, T. Nakayama, T. Kusunose, T. Sekino, K. Niihara

研究成果: Conference article査読


As hot pressing silicon nitride, sintering additives such as MgO, Al2O3 and Y2O3 are generally used. The use of sintering additives changes the physical properties of hot pressed silicon nitride markedly. In the present paper, silicon nitride was hot pressed with various amount of AlN as a sintering additive. Also mechanical properties such as density, hardness, Young's modulus, fracture toughness, flexual strength and thermal conductivity of hot pressed silicon nitrides were measured with regards to the content of AlN. Also microstructure such as grain-boundary phase was observed using a TEM. The effect of α/β phase fraction on the mechanical and thermal properties of silicon nitride was investigated as a function of the amount of AlN additive.

ジャーナルMaterials Science Forum
出版ステータスPublished - 2003 1月 1
イベントEco - Materials Processing and Design - Gyungpodae, Korea, Republic of
継続期間: 2003 2月 42003 2月 6

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学


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