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dc.contributor.authorVaquero-Aguilar, C.-
dc.contributor.authorLópez-Robledo, Manuel Jesús-
dc.contributor.authorMartínez Fernández, J.-
dc.contributor.authorReal, Concepción-
dc.contributor.authorJiménez Melendo, M.-
dc.identifierdoi: 10.1016/j.jeurceramsoc.2010.05.023-
dc.identifierissn: 0955-2219-
dc.identifier.citationJournal of the European Ceramic Society 31: 1333- 1338 (2011)-
dc.description.abstractThe high-temperature mechanical properties of the mixed ionic-electronic conductor perovskite BaCe0.95Y0.05O3-δ with average grain size of 0.40μm have been studied in compression between 1100 and 1300°C in air at different initial strain rates. The true stress-true strain curves display an initial stress drop, followed by an extended steady-state stage. As the temperature decreases and/or the strain rate increases, there is a transition to a damage-tolerant strain-softening stage and eventually to catastrophic failure. Analysis of mechanical and microstructural data revealed that grain boundary sliding is the primary deformation mechanism. The strength drop has been correlated with the growth of ultrafine grains during deformation, already present at grain boundaries and triple grain junctions in the as-fabricated material. © 2010 Elsevier Ltd.-
dc.description.sponsorshipThis work was supported by the Project no. MAT2009-13979-C03-01, Ministerio de Ciencia e Innovación, Spain.-
dc.titleHigh-temperature mechanical behavior of polycrystalline yttrium-doped barium cerate perovskite-
dc.description.versionPeer Reviewed-
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