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Mechanical properties of a spinel-ferrite-based cermet: effects of temperature and oxidation

Abstract : Thermomechanical properties of a spinel-ferrite-based cermet, envisaged to built inert anodes for the Hall-Heroult processing of aluminium, have been intensively investigated before and after full oxidation under air. At low temperatures, the behaviour is purely linear, elastic and brittle. Above 900 °C, the material creeps and exhibits a very large ductility for a ceramic-based material. Elasticity, fracture and viscoplasticity have been characterised up to 1000 °C using compression and bending tests. A non-linear isotropic strain hardening creep law has been identified using an optimisation procedure coupled with a finite element analysis of the bending creep tests. Microstructural, physical and mechanical changes induced by full oxidation have been characterised.
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Submitted on : Tuesday, February 19, 2013 - 10:50:12 AM
Last modification on : Wednesday, November 17, 2021 - 12:28:18 PM

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Guillaume Huchet, Michel Boussuge, Vincent Maurel, H. Roustan. Mechanical properties of a spinel-ferrite-based cermet: effects of temperature and oxidation. Journal of Materials Science, Springer Verlag, 2013, 48, pp.3264-3271. ⟨10.1007/s10853-012-7111-x⟩. ⟨hal-00789979⟩

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