Chapter 14. Polymer Architecture and Crystallization Behavior of SiCN-Fiber Precursors

  1. J. P. Singh
  1. D. Suttor,
  2. J. Hacker,
  3. S. Traßl,
  4. H. Müller,
  5. H.-J. Kleebe and
  6. G. Ziegler

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294437.ch14

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

Suttor, D., Hacker, J., Traßl, S., Müller, H., Kleebe, H.-J. and Ziegler, G. (1997) Polymer Architecture and Crystallization Behavior of SiCN-Fiber Precursors, 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.ch14

Author Information

  1. Institute for Materials Research (IMA), University of Bayreuth, Ludwig-Thoma Str. 36b, D-95440 Bayreuth, Germany

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:

  • sicn fiber precursors;
  • crystallization behavior;
  • polymer architecture;
  • diffraction techniques;
  • bulk density

Summary

SiCN-fiber precursors with tailored properties and structures (solvent free, viscosity, thermosetting behavior, ceramic yield,) were synthesized from functionalized chlorosilanes. Pyrolysis behavior was characterized with respect to the transition of a Si,C,N,H-containing organic polymer to an amorphous SiCN-glass; special emphasis was put on the subsequent crystallization of these glasses at higher temperatures using a variety of spectroscopic, thermoanalytical and diffraction techniques in addition to high resolution transmission electron microscopy (TEM). The polymer derived glasses showed substantial rearrangement in the still amorphous state towards a SiN4-low range order (as observed by NMR without significant mass loss and XRD-detectable crystallization in the temperature range between 1000 °C and 1500 °C. Bulk density, however, increased significantly. Distinct formation of a SiC4-environment was associated with the decomposition of the SiN4-areas within the SiCN-phase.