Chapter 33. The Role of Interfaces in the Oxidation of 3D-Carbon/Carbon Composites

  1. Hua-Tay Lin and
  2. Mrityunjay Singh
  1. R. Naslain,
  2. R. Pailler,
  3. X. Bourrat,
  4. S. Labruquere and
  5. E. Duvivier

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294741.ch33

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3

How to Cite

Naslain, R., Pailler, R., Bourrat, X., Labruquere, S. and Duvivier, E. (2008) The Role of Interfaces in the Oxidation of 3D-Carbon/Carbon Composites, in 26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3 (eds H.-T. Lin and M. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294741.ch33

Author Information

  1. Laboratory for Thermostructural Composites University Bordeaux 1, 33600 Pessac, France

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2002

ISBN Information

Print ISBN: 9780470375785

Online ISBN: 9780470294741

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Keywords:

  • microtexture;
  • oxidation;
  • density;
  • fabrication;
  • microtexture

Summary

Oxidation of C/C composites fabricated from PAN-based fibers was studied in flowing dry air at 600°C. It preferentially occurs at the fiber/matrix interfaces with a kinetics depending upon the microtexture of the carbons and the catalytic impurities present at the interfaces. The influence of fiber coatings (H3PO4, H3BO3, B-C, Si-C and Si-B-C) is studied. Boron-rich Si-B-C fiber coatings significantly reduce the oxidation rates due to the rapid formation of a fluid oxide phase healing the annular pore formed around each fiber at the composite surface.