Chapter 31. Investigation of Mechanical Properties of Chemically Vapor Infiltrated (CVI) Ceramic Matrix Composites
- John B. Wachtman Jr.
Published Online: 28 MAR 2008
Copyright © 1994 The American Ceramic Society
Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - A: Ceramic Engineering and Science Proceedings, Volume 15, Issue 4
How to Cite
Vaidyanathan, K. R., Sankar, J., Kelkar, A. D. and Narayan, J. (1994) Investigation of Mechanical Properties of Chemically Vapor Infiltrated (CVI) Ceramic Matrix Composites, in Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - A: Ceramic Engineering and Science Proceedings, Volume 15, Issue 4 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314500.ch31
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1994
Print ISBN: 9780470375327
Online ISBN: 9780470314500
The mechanical properties of two different lay-ups of Nicalon™ fiber-reinforced SiC matrix composites fabricated employing the forced-flow, thermal gradient chemical vapor infiltration (FCVI) process were compared at room temperature and elevated temperature in pure tension. A carbon interface layer was used for both types of composites. Because of the nature of the FCVI process, only short-length specimens (7-8 cms) could be fabricated. Room and elevated temperature tensile strengths were measured and compared for the two types of composites. Scanning electron microscopy and transmission electron microscopy were used to analyze the fracture behavior in this composite system. Fractography as well as possible factors responsible for the differences in tensile strength for the two types of composites are discussed in this paper.