Chapter 28. Elevated Temperature Crack Growth in Sic Whisker-Reinforced Alumina
- John B. Wachtman Jr.
Published Online: 28 MAR 2008
Copyright © 1988 The American Ceramic Society, Inc.
Proceedings of the 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 7/8
How to Cite
Jakus, K. and Nair, S. V. (1988) Elevated Temperature Crack Growth in Sic Whisker-Reinforced Alumina, in Proceedings of the 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310496.ch28
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1988
Print ISBN: 9780470374801
Online ISBN: 9780470310496
Interrupted creep crack growth tests in argon gas atmosphere were conducted at 1100°C, 1200°C, and 1300°C with Sic whisker reinforced alumina specimens. Crack nucleation and growth was followed as a function of creep strain. It was found that the crack nucleation and growth characteristics of this composite fell in between that of a fine grain high purity monolithic alumina and a relatively large grain vitreous bonded alumina. Crack coalescence which left behind unbroken bridges were the dominant mechanism of crack growth. No evidence was found for high temperature whisker pullout.