Chapter 63. Hot Corrosion of Two Nicalon Fiber Reinforced Glass-Ceramic Matrix Composites

  1. John B. Wachtman Jr.
  1. S.-W. Wang,
  2. R. W. Kowalik and
  3. R. Sands

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314180.ch63

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8

How to Cite

Wang, S.-W., Kowalik, R. W. and Sands, R. (1993) Hot Corrosion of Two Nicalon Fiber Reinforced Glass-Ceramic Matrix Composites, in Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314180.ch63

Author Information

  1. Naval Air Warfare Center, Aircraft Division, Warminster, PA 19874

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1993

ISBN Information

Print ISBN: 9780470375266

Online ISBN: 9780470314180

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Keywords:

  • corrosion;
  • calcium aluminosilicate;
  • electron microscopy;
  • sodium sulfate;
  • degradation

Summary

Hot corrosion studies were conducted to determine the effects of molten salt on Nicalon SiC fiber reinforced calcium aluminosilicate and Nicalon SiC fiber reinforced lithium aluminosilicate composites. Specimens coated with sodium sulfate were heat treated at 900°C for various times under air and argon atmospheres. Microstructural changes in the fiber reinforcement and matrix were investigated using electron microscopy and X-Ray diffraction. Tensile testing was carried out on as-received specimens and heat treated specimens with and without salt. Changes in composite strength were observed for the specimens subjected to sodium sulfate, and possible degradation mechanisms caused by the presence of sodium sulfate are discussed.