dc.creator | Ciria Matamoros, Desiree | es |
dc.creator | Jiménez Melendo, Manuel | es |
dc.creator | Aubin, V. | es |
dc.creator | Dezanneau, Guilhem | es |
dc.date.accessioned | 2024-01-12T15:04:19Z | |
dc.date.available | 2024-01-12T15:04:19Z | |
dc.date.issued | 2020-05 | |
dc.identifier.citation | Ciria Matamoros, D., Jiménez Melendo, M., Aubin, V. y Dezanneau, G. (2020). Creep properties of high dense La9.33Si6O26 electrolyte for SOFCs. Journal of the European Ceramic Society, 40 (5), 1989-1998. https://doi.org/10.1016/j.jeurceramsoc.2020.01.004. | |
dc.identifier.issn | 0955-2219 | es |
dc.identifier.issn | 1873-619X | es |
dc.identifier.uri | https://hdl.handle.net/11441/153307 | |
dc.description.abstract | High density La9.33Si6O26 polycrystals were fabricated by conventional and spark plasma sintering starting from nanopowders synthesized by freeze-drying. The materials exhibit a homogeneous microstructure formed by equiaxed grains with average sizes of 1.1 μm and 0.2 μm-diameter depending on the sintering route. Compressive mechanical tests were performed in air at constant strain rate between 900 and 1300 °C. A gradual brittle-to-ductile transition was found with increasing temperature and/or decreasing strain rate. Grain boundary sliding is the main deformation mechanism in the ductile region, characterized by a stress exponent n = 1 for the conventional sintered (large-grained) material and n = 2 for the spark plasma sintered (fine-grained) material; in both cases, the activation energy for creep was 360 kJ/mol. Effective cation diffusivities have been derived from mechanical data by comparison with appropriate models. The creep properties of lanthanum silicates are reported here for the first time. | es |
dc.description.sponsorship | Ministerio de Ciencia, Innovación y Universidades MAT2016-76526-R | es |
dc.format | application/pdf | es |
dc.format.extent | 21 p. | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.relation.ispartof | Journal of the European Ceramic Society, 40 (5), 1989-1998. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Boundary sliding | es |
dc.subject | Creep | es |
dc.subject | Grain | es |
dc.subject | Lanthanum silicate | es |
dc.subject | Mechanical properties | es |
dc.subject | SOFC electrolyte | es |
dc.title | Creep properties of high dense La9.33Si6O26 electrolyte for SOFCs | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/acceptedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física de la Materia Condensada | es |
dc.relation.projectID | MAT2016-76526-R | es |
dc.relation.publisherversion | https://doi.org/10.1016/j.jeurceramsoc.2020.01.004 | es |
dc.identifier.doi | 10.1016/j.jeurceramsoc.2020.01.004 | es |
dc.journaltitle | Journal of the European Ceramic Society | es |
dc.publication.volumen | 40 | es |
dc.publication.issue | 5 | es |
dc.publication.initialPage | 1989 | es |
dc.publication.endPage | 1998 | es |
dc.contributor.funder | Ministerio de Ciencia, Innovación y Universidades (MICINN). España | es |