Chapter 22. Evaluation of Microstructure for SiC/SiC Composites using Mercury Intrusion Method

  1. Ersan Ustundag and
  2. Gary Fischman
  1. Shoko Suyama1,
  2. Yoshiyasu Itoh1,
  3. Satoshi Nakagawa2 and
  4. Nobuo Tachikawa2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294567.ch22

23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures : A: Ceramic Engineering and Science Proceedings, Volume 20, Issue 3

23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures : A: Ceramic Engineering and Science Proceedings, Volume 20, Issue 3

How to Cite

Suyama, S., Itoh, Y., Nakagawa, S. and Tachikawa, N. (1999) Evaluation of Microstructure for SiC/SiC Composites using Mercury Intrusion Method, in 23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures : A: Ceramic Engineering and Science Proceedings, Volume 20, Issue 3 (eds E. Ustundag and G. Fischman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294567.ch22

Author Information

  1. 1

    Power & Industrial Systems R&D Center, Toshiba Corp. 2–4, Yokohama 230–0045, Japan

  2. 2

    Advanced Energy Development Department, Toshiba Corp. 1–1-6, Tokyo 100–8510, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1999

ISBN Information

Print ISBN: 9780470375631

Online ISBN: 9780470294567

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Keywords:

  • thermal properties;
  • microstructure, mercury intrusion method;
  • porosity;
  • impregnation

Summary

SiC/SiC composite has received considerable attention for high temperature structural applications. The mechanical and thermal properties of SiC/SiC composites are mainly dependent on the microstructure, such as porosity, pore size distribution and specific surface area. This paper deals with the use of mercury intrusion method(MIM) for characterizing the microstructure of SiC/SiC composites. The appropriate sample size for measuring by MIM was provided; 0.38cm3 (W8 × L24 × t2mm) for the porous SiC/SiC composite and 0.26cm3(w8 × l16 × t2mm) for the dense SiC/SiC composite. The effects of pores with narrow openings and those of closed pores on porosity were made clear. Eight kinds of SiC/SiC composites, such as chemical vapor infiltration, precursor impregnation and pyrolysis, hot-pressing and reaction-sintering were evaluated using the mercury intrusion method.