Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered composites

Three-phase alumina/YAG/yttria-stabilized cubic zirconia (YSZ) composites were fabricated by a solid-state reaction route starting from commercial powders of Al2O3, Y2O3 and monoclinic ZrO2. The final phases Al2O3, YAG and YSZ were obtained after calcination of the powder mixtures at 1400 °C. Dense...

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Autores: Huamán-Mamani, F. A., Jiménez Holgado, C., Jiménez Melendo, Manuel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/153265
Acceso en línea:https://hdl.handle.net/11441/153265
https://doi.org/10.1016/j.jeurceramsoc.2021.07.055
Access Level:acceso abierto
Palabra clave:Alumina
Composite material
Creep
Grain boundary sliding
Microstructure
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spelling Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered compositesHuamán-Mamani, F. A.Jiménez Holgado, C.Jiménez Melendo, ManuelAluminaComposite materialCreepGrain boundary slidingMicrostructureThree-phase alumina/YAG/yttria-stabilized cubic zirconia (YSZ) composites were fabricated by a solid-state reaction route starting from commercial powders of Al2O3, Y2O3 and monoclinic ZrO2. The final phases Al2O3, YAG and YSZ were obtained after calcination of the powder mixtures at 1400 °C. Dense bulk composites were obtained after sintering, with a homogeneous microstructure of fine and equiaxed grains with sizes of 1 μm. Compressive mechanical tests were performed at 1300–1450 °C in air at constant load and at constant initial strain rate. A brittle-to-ductile transition was found with increasing temperature. Grain boundary sliding is the main deformation mechanism in the ductile regime, characterized by a stress exponent of 2 and by the absence of dislocation activity and changes in grain morphology. Alumina seems to be the rate-controlling phase owing to the improvement in creep resistance by the presence of yttrium and zirconium of the other two phases.Ministerio de Ciencia e Innovación MAT2009-13979-C03-01ElsevierFísica de la Materia CondensadaMinisterio de Ciencia e Innovación (MICIN). España2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/153265https://doi.org/10.1016/j.jeurceramsoc.2021.07.055reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésJournal of the European Ceramic Society, 41 (15), 7752-7761.MAT2009-13979-C03-01https://doi.org/10.1016/j.jeurceramsoc.2021.07.055info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1532652026-06-17T12:51:07Z
dc.title.none.fl_str_mv Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered composites
title Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered composites
spellingShingle Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered composites
Huamán-Mamani, F. A.
Alumina
Composite material
Creep
Grain boundary sliding
Microstructure
title_short Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered composites
title_full Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered composites
title_fullStr Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered composites
title_full_unstemmed Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered composites
title_sort Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered composites
dc.creator.none.fl_str_mv Huamán-Mamani, F. A.
Jiménez Holgado, C.
Jiménez Melendo, Manuel
author Huamán-Mamani, F. A.
author_facet Huamán-Mamani, F. A.
Jiménez Holgado, C.
Jiménez Melendo, Manuel
author_role author
author2 Jiménez Holgado, C.
Jiménez Melendo, Manuel
author2_role author
author
dc.contributor.none.fl_str_mv Física de la Materia Condensada
Ministerio de Ciencia e Innovación (MICIN). España
dc.subject.none.fl_str_mv Alumina
Composite material
Creep
Grain boundary sliding
Microstructure
topic Alumina
Composite material
Creep
Grain boundary sliding
Microstructure
description Three-phase alumina/YAG/yttria-stabilized cubic zirconia (YSZ) composites were fabricated by a solid-state reaction route starting from commercial powders of Al2O3, Y2O3 and monoclinic ZrO2. The final phases Al2O3, YAG and YSZ were obtained after calcination of the powder mixtures at 1400 °C. Dense bulk composites were obtained after sintering, with a homogeneous microstructure of fine and equiaxed grains with sizes of 1 μm. Compressive mechanical tests were performed at 1300–1450 °C in air at constant load and at constant initial strain rate. A brittle-to-ductile transition was found with increasing temperature. Grain boundary sliding is the main deformation mechanism in the ductile regime, characterized by a stress exponent of 2 and by the absence of dislocation activity and changes in grain morphology. Alumina seems to be the rate-controlling phase owing to the improvement in creep resistance by the presence of yttrium and zirconium of the other two phases.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/153265
https://doi.org/10.1016/j.jeurceramsoc.2021.07.055
url https://hdl.handle.net/11441/153265
https://doi.org/10.1016/j.jeurceramsoc.2021.07.055
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of the European Ceramic Society, 41 (15), 7752-7761.
MAT2009-13979-C03-01
https://doi.org/10.1016/j.jeurceramsoc.2021.07.055
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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