Chapter 3. Effect of Anisotropic Thermal Expansion on the Strength of Phosphate-Bonded Al2O3 Bicrystals
- William J. Smothers
Published Online: 26 MAR 2008
Copyright © 1988 The American Ceramic Society, Inc.
Application of Refractories: Ceramic Engineering and Science Proceedings, Volume 9, Issue 1/2
How to Cite
Soltani, M. and Benzel, J. F. (1988) Effect of Anisotropic Thermal Expansion on the Strength of Phosphate-Bonded Al2O3 Bicrystals, in Application of Refractories: Ceramic Engineering and Science Proceedings, Volume 9, Issue 1/2 (ed W. J. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310465.ch3
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1988
Print ISBN: 9780470374764
Online ISBN: 9780470310465
- residual stress;
- thermal expansion;
Alumina bicrystals were produced using sodium metaphosphate as the bonding agent. The room temperature tensile strengths of bicrystals containing no crystallographic mismatch, or controlled amounts of twist, tilt and combinations of twist and tilt mismatch were determined. These results indicated that the strength of the bicrystal grain boundaries decreased as the amount of residual stress present increased. These stresses were directly proportional to the differential thermal expansion across the grain boundary which is proportional to the degree of mismatch and maximum firing temperature.