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Study on Aging of Tetragonal Zirconia by Coupling Impedance and Raman Spectroscopies in Water Vapor Atmosphere

By Elisabeth Djurado, Florence Boulc'H, Laurent Dessemond, Noël Rosman and Michel Mermoux

Abstract

International audienceThis paper presents experimental data on study of aging nanostructured and tetragonal single-phased 2.5 mol % Y2O3-doped ZrO2 ceramics at 250°C for 1000 h in a steam atmosphere. An excellent stabilization of tetragonal zirconia polycrystalline ceramics was obtained contrary to the present literature, probably due to favorable microstructural characteristics of the materials. In situ impedance and Raman spectroscopies have been coupled to correlate the electrical properties and phase content in order to provide new insight into the mechanism of monoclinic degradation

Topics: zirconium compounds, yttrium compounds, ceramics, ageing, electrochemical impedance spectroscopy, Raman spectra, impurity distribution, crystal microstructure, [CHIM.MATE]Chemical Sciences/Material chemistry
Publisher: 'The Electrochemical Society'
Year: 2004
DOI identifier: 10.1149/1.1697401
OAI identifier: oai:HAL:hal-00417924v1
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