Chapter 38. Silicon Effects on Properties of Melt Infiltrated SiC/SiC Composites

  1. Todd Jessen and
  2. Ersan Ustundag
  1. Ramakrishna T. Bhatt1,
  2. Janet B. Hurst2 and
  3. John Z. Gyekenyesi3

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294628.ch38

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3

How to Cite

Bhatt, R. T., Hurst, J. B. and Gyekenyesi, J. Z. (2000) Silicon Effects on Properties of Melt Infiltrated SiC/SiC Composites, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294628.ch38

Author Information

  1. 1

    U.S. Army Research Laboratory Glenn Research Center Cleveland, OH 44135

  2. 2

    NASA Glenn Research Center 21000 Brookpark Rd Cleveland, OH 44135

  3. 3

    Ohio Aerospace Institute Glenn Research Center Cleveland, OH 44135

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2000

ISBN Information

Print ISBN: 9780470375686

Online ISBN: 9780470294628

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Keywords:

  • microstructural characteristics;
  • ceramic matrix composites;
  • sic/SiC composites;
  • reaction sintering;
  • fusion reactor

Summary

Silicon effects on tensile and creep properties, and thermal conductivity of Hi-Nicalon SiC/SiC composites have been investigated. The composites consist of 8 layers of 5HS 2-D woven preforms of BN/SiC coated Hi-Nicalon fiber mats and a silicon matrix, or a mixture of silicon matrix and SiC particles. The Hi-Nicalon SiC/silicon and Hi-Nicalon SiC/SiC composites contained ∼24 and 13 vol% silicon, respectively. Results indicate residual silicon up to 24 vol% has no significant effect on creep and thermal conductivity, but does decrease the primary elastic modulus and stress corresponding to deviation from linear stress-strain behavior.