Chapter 38. Mechanical Properties of Laminated Ceramic Composites in Alumina- and Zirconia- Based Systems
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1993 The American Ceramic Society
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
Russo, C. J., Harmer, M. P., Chan, H. M. and Miller, G. A. (1993) Mechanical Properties of Laminated Ceramic Composites in Alumina- and Zirconia- Based Systems, 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.ch38
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1993
Print ISBN: 9780470375273
Online ISBN: 9780470314234
- toughness-curve (T-curve);
Trilayer laminated composites were produced consisting of a high strength surface layer on a high toughness bulk material. Results for (a) an alumina + 20 vol% aluminum titanate (AAT20) system, and (b) a zirconia- based system showed that for a suitable thickness surface layer, the composite displayed high strength for all indentation flaw sizes. This indicates that the trilayer design was capable of achieving high toughness, without the usual accompanying reduction in strength. A toughness-curve (T-curve) model based on regions of constant closure pressure acting in the crack wake successfully accounted for the experimental strength results.