Low‐Temperature Aging of Y‐TZP Ceramics

By J. Chevalier, B. Calès, J. Drouin. 2004

679 citations recorded by the source corpus.

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.

View Paper: https://www.semanticscholar.org/paper/b692235b15f9a379333f959d9bfb931da0965c65

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Citations in the corpus

• Low temperature degradation -aging- of zirconia: A critical review of the relevant aspects in dentistry. (2010, methodology): “In another study [46] aging of 3Y-TZP conducted at 70 ◦C esulted in more than 50%m-phase after 5000h (less than 200 ays), with an average GS less than 0.”
• Stabilized zirconia as a structural ceramic: an overview. (2008, unknown): “[45] Chevalier J, Calès B, Drouin JM.”
• What future for zirconia as a biomaterial? (2006, methodology): “They were likely to be monoclinic ‘spots’, which were observed in previous works with accelerated, in vitro tests [17].”
• State of the art of zirconia for dental applications. (2008, background): “The low temperature degradation (LTD) of zirconia is a well-documented phenomenon, exacerbated notably by the presence of water [7–12].”