Chapter 25. Effect of Sustained High Temperature Exposure on the Mechanical Properties of Nicalon™/Al2O3 Composites

  1. John B. Wachtman Jr.
  1. A. S. Fareed1,
  2. B. Sonuparlak1,
  3. P. A. Craig2 and
  4. J. E. Garnier2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313978.ch25

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10

How to Cite

Fareed, A. S., Sonuparlak, B., Craig, P. A. and Garnier, J. E. (1994) Effect of Sustained High Temperature Exposure on the Mechanical Properties of Nicalon™/Al2O3 Composites, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313978.ch25

Author Information

  1. 1

    Lanxide Corporation Newark, DE 19714–6077

  2. 2

    DuPont Lanxide Composites, Inc. Newark, DE 19714–6077

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375198

Online ISBN: 9780470313978

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Keywords:

  • methodology;
  • grindability;
  • mechanical properties;
  • characterized;
  • proportional

Summary

The directed metal oxidation process was used to fabricate Nicalon™ fiber reinforced alumina matrix composites. Flexural strengths, tensile strengths and fracture toughnesses were measured between room temperature and 1400°C. Excellent mechanical property retention was observed up to 1200°C, with good retention to 1400°C. Stress rupture tests conducted at 1200°C in air demonstrated lifetimes greater than 1000 h with applied stresses in the range of 66 MPa. Successful engine and rig tests by manufacturers of man-rated as well as expendable turbine engines are also reported.