Chapter 40. Mechanical Performance of Multi-Layered Silicon Nitride

  1. J. P. Singh
  1. Tatsuki Ohji,
  2. Kiyoshi Hirao and
  3. Shuzo Kanzaki

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294437.ch40

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3

How to Cite

Ohji, T., Hirao, K. and Kanzaki, S. (1997) Mechanical Performance of Multi-Layered Silicon Nitride, in Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3 (ed J. P. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294437.ch40

Author Information

  1. National Industrial Research Institute of Nagoya, Nagoya, 462 Japan Yasuhiro Shigegaki Synergy Ceramics Laboratory, Nagoya, 462 Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1997

ISBN Information

Print ISBN: 9780470375495

Online ISBN: 9780470294437

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Keywords:

  • silicon nitride;
  • fracture resistance;
  • whiskers;
  • laminated structure;
  • microscopic study

Summary

This paper investigates the fracture resistance behavior of a novel silicon nitride with a unique laminated structure consisting of alternate dense and porous layers, in the latter of which β-silicon nitride whiskers are aligned parallel to the layer. The R-curve behavior was determined by using a chevron-notched beam technique when a crack propagates in the direction normal to the whisker axis. The resistance markedly increases whenever a crack passes through the porous layer, resulting in step-wise rising R-curve behavior. The microscopic study revealed that the aligned whiskers were almost completely pulled-out in the porous layer.