Low temperature degradation and mechanical properties of alumina reinforced ceria-zirconia by colloidal processing

10Ce-TZP base composites with 2.5, 5, 10 and 15 wt% alumina were fabricated by colloidal processing from slurries with 41 vol% solid load in order to investigate the effects of alumina in the final composites aging and mechanical properties. Alumina particle surface charge was modified with the addi...

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Autores: Tovar Vargas, Daniela|||0000-0001-7758-4831, Ferrari, B, Anglada Gomila, Marcos Juan|||0000-0003-4955-3434, Jiménez Piqué, Emilio|||0000-0002-6950-611X
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/346591
Acceso en línea:https://hdl.handle.net/2117/346591
https://dx.doi.org/10.1016/j.jeurceramsoc.2020.09.031
Access Level:acceso abierto
Palabra clave:Colloidal processing
Zirconia
Ceria
Alumina
Low temperature degradation
Zirconi -- Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria dels materials
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spelling Low temperature degradation and mechanical properties of alumina reinforced ceria-zirconia by colloidal processingTovar Vargas, Daniela|||0000-0001-7758-4831Ferrari, BAnglada Gomila, Marcos Juan|||0000-0003-4955-3434Jiménez Piqué, Emilio|||0000-0002-6950-611XColloidal processingZirconiaCeriaAluminaLow temperature degradationZirconi -- Propietats mecàniquesÀrees temàtiques de la UPC::Enginyeria dels materials10Ce-TZP base composites with 2.5, 5, 10 and 15 wt% alumina were fabricated by colloidal processing from slurries with 41 vol% solid load in order to investigate the effects of alumina in the final composites aging and mechanical properties. Alumina particle surface charge was modified with the addition of 3 wt% of PAA. The resulting composites have high relative densities (~ 99%) and homogeneous alumina distribution. The microstructure is refined by the alumina addition resulting in a tetragonal-monoclinic microstructure with monoclinic phase content diminishing with alumina concentration down to 16 vol% in 10Ce-15Al2O3 composite. From the study of hydrothermal aging in autoclave steam at 134 °C and 2 bar pressure, it is concluded that all composites have very high resistance to low temperature degradation. At the same time, mechanical properties were investigated by measuring hardness, elastic modulus, strength and t-m transformation around Vickers and spherical indentations. The t-m transformation extension around imprints prevents the formation of Vickers indentations cracks, which indicates a high level of damage tolerance for all compositions. In particular, for 10Ce-15Al2O3 composite, an excellent combination of hardness (~10 GPa), strength (~1400 MPa), damage tolerance, and resistance to low temperature degradation is achieved.Peer ReviewedElsevier20212021-02-0220212021-06-03journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/346591https://dx.doi.org/10.1016/j.jeurceramsoc.2020.09.031reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3465912026-05-27T15:37:01Z
dc.title.none.fl_str_mv Low temperature degradation and mechanical properties of alumina reinforced ceria-zirconia by colloidal processing
title Low temperature degradation and mechanical properties of alumina reinforced ceria-zirconia by colloidal processing
spellingShingle Low temperature degradation and mechanical properties of alumina reinforced ceria-zirconia by colloidal processing
Tovar Vargas, Daniela|||0000-0001-7758-4831
Colloidal processing
Zirconia
Ceria
Alumina
Low temperature degradation
Zirconi -- Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria dels materials
title_short Low temperature degradation and mechanical properties of alumina reinforced ceria-zirconia by colloidal processing
title_full Low temperature degradation and mechanical properties of alumina reinforced ceria-zirconia by colloidal processing
title_fullStr Low temperature degradation and mechanical properties of alumina reinforced ceria-zirconia by colloidal processing
title_full_unstemmed Low temperature degradation and mechanical properties of alumina reinforced ceria-zirconia by colloidal processing
title_sort Low temperature degradation and mechanical properties of alumina reinforced ceria-zirconia by colloidal processing
dc.creator.none.fl_str_mv Tovar Vargas, Daniela|||0000-0001-7758-4831
Ferrari, B
Anglada Gomila, Marcos Juan|||0000-0003-4955-3434
Jiménez Piqué, Emilio|||0000-0002-6950-611X
author Tovar Vargas, Daniela|||0000-0001-7758-4831
author_facet Tovar Vargas, Daniela|||0000-0001-7758-4831
Ferrari, B
Anglada Gomila, Marcos Juan|||0000-0003-4955-3434
Jiménez Piqué, Emilio|||0000-0002-6950-611X
author_role author
author2 Ferrari, B
Anglada Gomila, Marcos Juan|||0000-0003-4955-3434
Jiménez Piqué, Emilio|||0000-0002-6950-611X
author2_role author
author
author
dc.subject.none.fl_str_mv Colloidal processing
Zirconia
Ceria
Alumina
Low temperature degradation
Zirconi -- Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria dels materials
topic Colloidal processing
Zirconia
Ceria
Alumina
Low temperature degradation
Zirconi -- Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria dels materials
description 10Ce-TZP base composites with 2.5, 5, 10 and 15 wt% alumina were fabricated by colloidal processing from slurries with 41 vol% solid load in order to investigate the effects of alumina in the final composites aging and mechanical properties. Alumina particle surface charge was modified with the addition of 3 wt% of PAA. The resulting composites have high relative densities (~ 99%) and homogeneous alumina distribution. The microstructure is refined by the alumina addition resulting in a tetragonal-monoclinic microstructure with monoclinic phase content diminishing with alumina concentration down to 16 vol% in 10Ce-15Al2O3 composite. From the study of hydrothermal aging in autoclave steam at 134 °C and 2 bar pressure, it is concluded that all composites have very high resistance to low temperature degradation. At the same time, mechanical properties were investigated by measuring hardness, elastic modulus, strength and t-m transformation around Vickers and spherical indentations. The t-m transformation extension around imprints prevents the formation of Vickers indentations cracks, which indicates a high level of damage tolerance for all compositions. In particular, for 10Ce-15Al2O3 composite, an excellent combination of hardness (~10 GPa), strength (~1400 MPa), damage tolerance, and resistance to low temperature degradation is achieved.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-02-02
2021
2021-06-03
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/346591
https://dx.doi.org/10.1016/j.jeurceramsoc.2020.09.031
url https://hdl.handle.net/2117/346591
https://dx.doi.org/10.1016/j.jeurceramsoc.2020.09.031
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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