Influence of long-term ageing upon the mechanical properties of partially stabilized zirconia (Mg-PSZ) for heat-engine applications |
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| Authors: | J. Lamon A. Thorel D. Broussaud |
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| Affiliation: | (1) Ecole Nationale Supérieure des Mines de Paris, Centre des Matériaux, BP 87, 91003 Evry Cedex, France;(2) Present address: Battelle-Geneva, 7 Route de Drize, 1227 Carouge, Geneva, Switzerland |
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| Abstract: | The influence of long-term ageing at 1000° C upon the mechanical strength of a commercial Mg-PSZ ceramic is investigated. The Weibull solution was used to measure the material reliability. The effects of sub-eutectoid ageing were related to the stability of the tetragonal phase. Grain boundaries are shown to often act as fracture origins, and to constitute a fracture-controlling population that is not significantly affected by high-temperature ageing. |
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