Chapter 6. Hot Forming of a Nicalon SiC Fiber/Zirconia-Titania Matrix Composite

  1. John B. Wachtman Jr.
  1. Barry A. Bender and
  2. Todd L. Jessen

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314234.ch6

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 9/10

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 9/10

How to Cite

Bender, B. A. and Jessen, T. L. (1993) Hot Forming of a Nicalon SiC Fiber/Zirconia-Titania Matrix Composite, in Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314234.ch6

Author Information

  1. U.S. Naval Research Laboratory Washington, DC 20375–5343

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1993

ISBN Information

Print ISBN: 9780470375273

Online ISBN: 9780470314234

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Keywords:

  • unidirectional;
  • deformation process;
  • matrix microstructure;
  • fiber/matrix interface;
  • reinforcing

Summary

Using green or hot-pressed billets, unidirectional BN-coated Nicalon SiC fiber-reinforced ceramic matrix composites were hot formed with a pressure of 17.25 MPa into bodies with 15° or 30° bends. The starting matrix was a 50–50 mol% mixture of ZrO2 and TiO2. The resultant hot-formed green bodies were dense, strong, and tough, while the hot-formed hot-pressed billet was weak at the apex of the bend. The BN debond coating was left intact during hot forming as the fiber/matrix interface was not disrupted during the deformation process. However, cavitation cracking was observed in all the samples. No grain growth was observed in the hot-formed green bodies, while the matrix microstructure of the hot-pressed body changed during hot-forming.