Chapter 58. Thermal Diffusivity/Conductivity of Alumina-Silicon Carbide Composites

  1. John B. Wachtman Jr.
  1. P. H. McCluskey1,
  2. R. K. Williams2,
  3. R. S. Graves2 and
  4. T. N. Tiegs2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470310557.ch58

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 7/8

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 7/8

How to Cite

McCluskey, P. H., Williams, R. K., Graves, R. S. and Tiegs, T. N. (2008) Thermal Diffusivity/Conductivity of Alumina-Silicon Carbide Composites, in A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310557.ch58

Author Information

  1. 1

    New York State College of Ceramics at Alfred Univeristy Alfred, NY 14802

  2. 2

    Metals and Ceramics Division Oak Ridge National Laboratory Oak Ridge, TN 37831-6092

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780470374863

Online ISBN: 9780470310557

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Keywords:

  • chemical vapor deposition;
  • fiber-reinforced ceramic composites;
  • chemical vapor infiltration;
  • high fracture toughness;
  • carbon-carbon composites

Summary

The thermal diffusivity of Al2O3SiC whisker composites was measured as a function of temperature for several different compositions. It was determined that the diffusivity of the composites decreased with increasing temperature, but increased with increasing whisker content. Thermal conductivity, as calculated from diffusivity measurements, behaved similar to diffusivity. An estimate of the thermal conductivity of the silicon carbide whiskers was obtained for these materials using composite theory. Diffusivity data and the effects of thermal cycling and quenching on diffusivity will be presented.