Member, American Ceramic Society.
Low-Temperature Aging of Y-TZP Ceramics
Article first published online: 21 DEC 2004
Journal of the American Ceramic Society
Volume 82, Issue 8, pages 2150–2154, August 1999
How to Cite
Chevalier, J., Cales, B. and Drouin, J. M. (1999), Low-Temperature Aging of Y-TZP Ceramics. Journal of the American Ceramic Society, 82: 2150–2154. doi: 10.1111/j.1151-2916.1999.tb02055.x
K. J. Bowman—contributing editor
- Issue published online: 21 DEC 2004
- Article first published online: 21 DEC 2004
- Manuscript No. 190577. Received November 11, 1997; approved December 20, 1998.
The isothermal tetragonal-to-monoclinic transformation of a 3Y-TZP ceramic is investigated from 70° to 130°C in water and in steam by X-ray diffraction and optical interferometer techniques. Aging kinetics followed by X-ray diffraction are fitted by the Mehl-Avrami-Johnson law, suggesting nucleation and growth to be the key mechanisms for transformation. Optical interferometer observations of highly polished samples effectively reveal a nucleation and growth micromechanism for tetragonal-to-monoclinic transformation. A model based on surface change analysis is developed that fits closely to the X-ray diffraction results.