Chapter 81. Optimization of Grain Size in Polycrystalline Matrix of Al2O3/Al2O3 all Oxide Composite

  1. Todd Jessen and
  2. Ersan Ustundag
  1. H. Kakisawa and
  2. Y. Kagawa

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294628.ch81

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3

How to Cite

Kakisawa, H. and Kagawa, Y. (2000) Optimization of Grain Size in Polycrystalline Matrix of Al2O3/Al2O3 all Oxide Composite, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294628.ch81

Author Information

  1. Institute of Industrial Science, The University of Tokyo, 7-22-1, Roppongi, Minato-ku, Tokyo 106-8558, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2000

ISBN Information

Print ISBN: 9780470375686

Online ISBN: 9780470294628

SEARCH

Keywords:

  • deformation;
  • thermal barriers;
  • hot pressing;
  • surface displacement;
  • mechanical tests

Summary

The effect of matrix grain size on matrix cracking stress, σmc, in Al2O3 fiber-reinforced polycrystalline Al2O3 matrix composite has been studied. Dependency of the interface siding shear stress, τS, on matrix grain size is examined based on an interface contact model. Using the calculated interface stress, σmc is calculated: A model is proposed with the contribution of fiber bridging and grain bridging to the stress intensity factor taken into consideration. It is found that σmc is influenced by matrix grain size and a specific grain size maximizing σmc exists.