Hydrothermal Degradation of Zirconia Bioceramics: Effect of Ternary Oxide Additions

Abstract:

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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.

Info:

Periodical:

Key Engineering Materials (Volumes 396-398)

Main Theme:

Edited by:

Marcelo Prado and Cecília Zavaglia

Pages:

145-148

DOI:

10.4028/www.scientific.net/KEM.396-398.145

Citation:

A. A. Nogiwa-Valdez and M. W. Rainforth, "Hydrothermal Degradation of Zirconia Bioceramics: Effect of Ternary Oxide Additions ", Key Engineering Materials, Vols. 396-398, pp. 145-148, 2009

Online since:

October 2008

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$35.00

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