Hydrothermal Degradation of Zirconia Bioceramics: Effect of Ternary Oxide Additions |
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| Journal | Key Engineering Materials (Volumes 396 - 398) |
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| Volume | Bioceramics 21 |
| Edited by | Marcelo Prado and Cecília Zavaglia |
| Pages | 145-148 |
| DOI | 10.4028/www.scientific.net/KEM.396-398.145 |
| Citation | Akemi A. Nogiwa-Valdez et al., 2008, Key Engineering Materials, 396-398, 145 |
| Online since | October, 2008 |
| Authors | Akemi A. Nogiwa-Valdez, Mark W. Rainforth |
| Keywords | Hydrothermal Degradation, Phase Transformation, TZP, Zirconia |
| Abstract | Phase transformation of 3Y-TZP with different ternary oxide additions (Al2O3, La2O3, Sc2O3 and CeO2) was evaluated by hydrothermal degradation tests in water vapor at 180°C. Monoclinic phase quantification from XRD patterns showed an improved degradation resistance of the specimens with oxide additions in comparison to the 3Y-TZP base material. Cross sectional sample analysis showed that, even though for all the compositions the exposed surface became saturated with monoclinic phase, the penetration of the transformation varied. Alumina-lanthana doped materials exhibited the thinnest degraded layer. |
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