Chapter 53. Fracture Behavior of High Densified SiC/SiC Composites Fabricated by Reaction Bonding: Effect of SiC Coating as Interface Layer

  1. Todd Jessen and
  2. Ersan Ustundag
  1. T. Taguchi,
  2. N. Igawa,
  3. R. Yamada,
  4. M. Futakawa and
  5. S. Jitsukawa

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294628.ch53

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

Taguchi, T., Igawa, N., Yamada, R., Futakawa, M. and Jitsukawa, S. (2000) Fracture Behavior of High Densified SiC/SiC Composites Fabricated by Reaction Bonding: Effect of SiC Coating as Interface Layer, 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.ch53

Author Information

  1. Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, 319-1195, Japan

Publication History

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

ISBN Information

Print ISBN: 9780470375686

Online ISBN: 9780470294628

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Keywords:

  • ceramic matrix composites;
  • mechanical properties;
  • thermal properties;
  • self-sealing matrix composite;
  • material development

Summary

The high densified SiC/SiC composites were fabricated by reaction bonding (RB) process. 2D-SiC fiber fabrics were coated with porous SiC by polymer impregnation and pyrolysis (PIP) treatment, and coated with pyrolithic C and ß-SiC by chemical vapor infiltration (CVI) treatment. These fabrics and a fabric without coating were used for the SiC/SiC composites by RB process. The densities of the fabricated composites were measured, and the microstructures of the composites were observed. Stress-displacement curves and fracture surfaces were examined to evaluate the effect of the SiC coating on fracture behavior of the composites.

The densities of the SiC/SiC composites fabricated by RB process attained relative densities of 90% or higher. The microstructural observation showed that the CVI treatment used in this study prevented adhering the fibers to the matrix. This effect leads to the pull-out phenomenon in the specimen which used the coated fiber fabric by CVI treatment, and therefore this specimen exhibited non-catastrophic failure behavior.