20. BN Interphase Processed by LP-CVD from Tris(Dimethylamino)Borane and Characterized using SiC/SiC Minicomposites

  1. Edgar Lara-Curzio and
  2. Michael J. Readey
  1. S. Jacques,
  2. B. Bonnetot,
  3. M.-P. Berthet and
  4. H. Vincent

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291191.ch20

28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings, Volume 25, Issue 4

28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings, Volume 25, Issue 4

How to Cite

Jacques, S., Bonnetot, B., Berthet, M.-P. and Vincent, H. (2004) BN Interphase Processed by LP-CVD from Tris(Dimethylamino)Borane and Characterized using SiC/SiC Minicomposites, in 28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings, Volume 25, Issue 4 (eds E. Lara-Curzio and M. J. Readey), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291191.ch20

Author Information

  1. Laboratoire des Multimatériaux et Interfaces UMR 5615 University of Lyon 1 / CNRS 43, boulevard du 11 Novembre 1918 F - 69622 Villeurbanne Cedex, France

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2004

ISBN Information

Print ISBN: 9780470051528

Online ISBN: 9780470291191

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Keywords:

  • anisotropic turbostratic material;
  • low pressure chemical vapor deposition;
  • nicolet spectrometer;
  • transmission electron microscopy;
  • halogenated gases

Summary

SiC/BN/SiC 1D minicomposites were produced by infiltration of a Hi-Nicalon (from Nippon Carbon, Japan) fiber tow in a Low Pressure Chemical Vapor Deposition reactor. Tris(dimethylamino)borane was used as a halogenide-free precursor for the BN interphase processing. This precursor prevents fiber and CVD apparatus from chemical damage. FT-IR and XPS analyses have confirmed the boron nitride nature of the films. Minicomposite tensile tests with unload-reload cycles have shown that the minicomposite mechanical properties are good with a high interfacial shear stress. Transmission electron microscopy observation of the interphase reveals that it is made of an anisotropic turbostratic material. Furthermore, the fiber/matrix debonding, which occurs during mechanical loading, is located within the BN interphase itself.