Chapter 58. Si3N4 Materials Fabricated from Powders with Very High Fraction of α Phase

  1. Don Bray
  1. Xin Jiang

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294482.ch58

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

How to Cite

Jiang, X. (1988) Si3N4 Materials Fabricated from Powders with Very High Fraction of α Phase, in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294482.ch58

Author Information

  1. Synergy Ceramics Laboratory, Fine Ceramics Research Association Hirate-cho 1-1, Kita-ku, Nagoya 462, Japan Koji Watari, Motohiro Toriyama, and Shuzo Kanzaki National Industrial Research Institute of Nagoya Hirate-cho 1- 1, Kita-ku, Nagoya 462, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470375587

Online ISBN: 9780470294482

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Keywords:

  • thermal;
  • homogenous;
  • microstructure;
  • powders;
  • methanol

Summary

In order to improve thermal conductivity of sintered Si3N4, it is important to increase β-Si3N4 grain size. For reduction of the number of β-Si3N4 nuclei, Si3N4 powders with very high α phase content were obtained by classification of commercially available powders. The microstructure of the material fabricated from the classified the powders consisted of homogenous and very large elongated grains with a diameter of 5-10 μm and a length of 20-40 pm. It is expected that this material exhibits high thermal conductivity.