Low‐Temperature Aging of Y‐TZP Ceramics
- 1 August 1999
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 82 (8) , 2150-2154
- https://doi.org/10.1111/j.1151-2916.1999.tb02055.x
Abstract
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.Keywords
This publication has 15 references indexed in Scilit:
- Influence of a small amount of Al2O3 addition on the transformation of Y2O3-partially stabilized ZrO2 during annealingJournal of Materials Science, 1997
- Role of H2O on the degradation process of Y-TZPJournal of Materials Science Letters, 1987
- Grain-size dependence of toughness and transformability of 2mol% Y-TZP ceramicsJournal of Materials Science Letters, 1986
- Degradation During Aging of Transformation‐Toughened ZrO2‐Y2O3 Materials at 250°CJournal of the American Ceramic Society, 1986
- Transformation of Yttria‐Doped Tetragonal ZrO2 Polycrystals by Annealing in WaterJournal of the American Ceramic Society, 1985
- Transformation tougheningJournal of Materials Science, 1982
- Transformation tougheningJournal of Materials Science, 1982
- Phase change and mechanical properties of ZrO2-Y2O3 solid electrolyte after ageingSolid State Ionics, 1981
- Effect of stress-induced phase transformation on the properties of polycrystalline zirconia containing metastable tetragonal phaseJournal of Materials Science, 1978
- Ceramic steel?Nature, 1975