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Mechanical Properties of 8 Mole% Yttria-Stabilised Zirconia for Solid Oxide Fuel Cells

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Open access
Authors
Mawson, A.
Carter, Geoffrey
Hart, Robert
Kirby, Nigel
Nachmann, Amanda
Date
2006
Type
Journal Article

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Citation
Mawson, A. and Carter, G. and Hart, R. and Kirby, N. and Nachmann, A. 2006. Mechanical Properties of 8 Mole% Yttria-Stabilised Zirconia for Solid Oxide Fuel Cells. Materials Forum. 30: 148-158.
Source Title
Materials Forum
Faculty
Department of Medical Imaging Science
Division of Engineering, Science and Computing
Faculty of Science
School
Department of Imaging and Applied Physics
Remarks

This article orginally published by the Institute of Materials Engineering Australasia Ltd, t/as Materials Australia.

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Abstract

Both high ionic conductivity and mechanical strength are important when considering the potential application of ceramics in solid oxide fuel cells (SOFC). Yttria stabilised zirconia compounds can be used as both the electrolyte and anode support structure in self supporting SOFC and as a result, there is great interest in the development of these materials. The high ionic conductivity of an 8 mol% Y2O3 ZrO2 formulation, must be combined with suitable mechanical hardness and toughness, in order to qualify for SOFC application. The availability of suitable materials has been limited with the majority of suppliers having only small scale manufacturing capability. This study has investigated the physical and mechanical properties of a commercially available ZrO2(Y2O3)0.08 ceramic,. The product was found to contain only the cubic phase and possess the necessary structural characteristics for use in solid oxide fuel cells.