Chapter 81. Thermal Properties of Polycarbosilane Derived Porous Silicon Carbide Composites

  1. Waltraud M. Kriven and
  2. Hua-Tay Lin
  1. Susan Hayes1,
  2. Walter Sherwood1,
  3. David Stiles1,
  4. Casey Voorhees1,
  5. Wally Porter2,
  6. Laura Riester2,
  7. Hsin Wang2,
  8. Ralph Dinwiddie2 and
  9. Edgar Lara-Curzio2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294826.ch81

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4

How to Cite

Hayes, S., Sherwood, W., Stiles, D., Voorhees, C., Porter, W., Riester, L., Wang, H., Dinwiddie, R. and Lara-Curzio, E. (2003) Thermal Properties of Polycarbosilane Derived Porous Silicon Carbide Composites, in 27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4 (eds W. M. Kriven and H.-T. Lin), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294826.ch81

Author Information

  1. 1

    Starfire Systems, Inc., 877 25th Street, Watervliet, NY 12189

  2. 2

    High Temperature Materials Laboratory, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6062

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2003

ISBN Information

Print ISBN: 9780470375846

Online ISBN: 9780470294826

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Keywords:

  • carbide powders;
  • sub-micron;
  • cured and pyrolzyed;
  • mechanical properties;
  • thermal expansion

Summary

Sub-micron sized silicon carbide powders mixed with a liquid polycarbosilane as binder can be cold pressed, cured and pyrolzyed to form silicon carbide composites without the use of sintering aids or solvents. We have surveyed a variety of powder types, sizes and size distributions and several modes of mixing, pyrolyzing and re-infiltrating to develop composites with useful thermal and mechanical properties. This paper describes the preparation of these formulations and reports their thermal properties (coefficient of thermal expansion, thermal diffusivity and thermal conductivity) to 1000°C as well as mechanical properties at ambient and elevated temperatures. The thermal results are compared with those of amorphous SiC prepared from pure polycarbosilane.