Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite

Autores
Moreira Toja, Ramiro Julián; Rendtorff Birrer, Nicolás Maximiliano; Aglietti, Esteban Fausto; Uchikoshi, Tetsuo; Sakka, Yoshio; Suárez, Gustavo
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Lanthanum silicate oxyapatite (LSO) is an encouraging material for its use as an electrolyte in intermediate temperature solid oxide fuel cells. There is a vacancy in knowledge respecting to LSO's mechanical properties, and thus they are the scope of research of the present work. Isostatically pressed bars were sintered at temperatures from 1200 °C to 1500 °C. The dependence of Young's modulus with porosity was fitted using three different modeling curves, and extrapolated for a fully dense material. The fitting of these equations give an E0 between 144 GPa and 169 GPa. This is the first time that LSO's Young's modulus is reported. Flexural strength,Vickers hardness, fracture toughness (KIC) from microindentation cracks and nanohardness were also measured. Scanning electron micrography was performed on both a sub-sintered and the most sintered sample, and the microstructure and fracture mechanism were analyzed. In general, the mechanical behaviour is similar to other intermediate temperature solid oxide electrolytes. The fracture mechanism of the most sintered sample makes it well-suited for future SOFC applications.
Centro de Tecnología de Recursos Minerales y Cerámica
Materia
Química
Lanthanum silicate oxyapatite
Mechanical properties
Young's modulus
Fracture
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/164068

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oai_identifier_str oai:sedici.unlp.edu.ar:10915/164068
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatiteMoreira Toja, Ramiro JuliánRendtorff Birrer, Nicolás MaximilianoAglietti, Esteban FaustoUchikoshi, TetsuoSakka, YoshioSuárez, GustavoQuímicaLanthanum silicate oxyapatiteMechanical propertiesYoung's modulusFractureLanthanum silicate oxyapatite (LSO) is an encouraging material for its use as an electrolyte in intermediate temperature solid oxide fuel cells. There is a vacancy in knowledge respecting to LSO's mechanical properties, and thus they are the scope of research of the present work. Isostatically pressed bars were sintered at temperatures from 1200 °C to 1500 °C. The dependence of Young's modulus with porosity was fitted using three different modeling curves, and extrapolated for a fully dense material. The fitting of these equations give an E0 between 144 GPa and 169 GPa. This is the first time that LSO's Young's modulus is reported. Flexural strength,Vickers hardness, fracture toughness (KIC) from microindentation cracks and nanohardness were also measured. Scanning electron micrography was performed on both a sub-sintered and the most sintered sample, and the microstructure and fracture mechanism were analyzed. In general, the mechanical behaviour is similar to other intermediate temperature solid oxide electrolytes. The fracture mechanism of the most sintered sample makes it well-suited for future SOFC applications.Centro de Tecnología de Recursos Minerales y Cerámica2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf14348-14354http://sedici.unlp.edu.ar/handle/10915/164068enginfo:eu-repo/semantics/altIdentifier/issn/0272-8842info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ceramint.2018.05.043info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:43:11Zoai:sedici.unlp.edu.ar:10915/164068Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:43:11.377SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite
title Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite
spellingShingle Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite
Moreira Toja, Ramiro Julián
Química
Lanthanum silicate oxyapatite
Mechanical properties
Young's modulus
Fracture
title_short Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite
title_full Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite
title_fullStr Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite
title_full_unstemmed Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite
title_sort Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite
dc.creator.none.fl_str_mv Moreira Toja, Ramiro Julián
Rendtorff Birrer, Nicolás Maximiliano
Aglietti, Esteban Fausto
Uchikoshi, Tetsuo
Sakka, Yoshio
Suárez, Gustavo
author Moreira Toja, Ramiro Julián
author_facet Moreira Toja, Ramiro Julián
Rendtorff Birrer, Nicolás Maximiliano
Aglietti, Esteban Fausto
Uchikoshi, Tetsuo
Sakka, Yoshio
Suárez, Gustavo
author_role author
author2 Rendtorff Birrer, Nicolás Maximiliano
Aglietti, Esteban Fausto
Uchikoshi, Tetsuo
Sakka, Yoshio
Suárez, Gustavo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Química
Lanthanum silicate oxyapatite
Mechanical properties
Young's modulus
Fracture
topic Química
Lanthanum silicate oxyapatite
Mechanical properties
Young's modulus
Fracture
dc.description.none.fl_txt_mv Lanthanum silicate oxyapatite (LSO) is an encouraging material for its use as an electrolyte in intermediate temperature solid oxide fuel cells. There is a vacancy in knowledge respecting to LSO's mechanical properties, and thus they are the scope of research of the present work. Isostatically pressed bars were sintered at temperatures from 1200 °C to 1500 °C. The dependence of Young's modulus with porosity was fitted using three different modeling curves, and extrapolated for a fully dense material. The fitting of these equations give an E0 between 144 GPa and 169 GPa. This is the first time that LSO's Young's modulus is reported. Flexural strength,Vickers hardness, fracture toughness (KIC) from microindentation cracks and nanohardness were also measured. Scanning electron micrography was performed on both a sub-sintered and the most sintered sample, and the microstructure and fracture mechanism were analyzed. In general, the mechanical behaviour is similar to other intermediate temperature solid oxide electrolytes. The fracture mechanism of the most sintered sample makes it well-suited for future SOFC applications.
Centro de Tecnología de Recursos Minerales y Cerámica
description Lanthanum silicate oxyapatite (LSO) is an encouraging material for its use as an electrolyte in intermediate temperature solid oxide fuel cells. There is a vacancy in knowledge respecting to LSO's mechanical properties, and thus they are the scope of research of the present work. Isostatically pressed bars were sintered at temperatures from 1200 °C to 1500 °C. The dependence of Young's modulus with porosity was fitted using three different modeling curves, and extrapolated for a fully dense material. The fitting of these equations give an E0 between 144 GPa and 169 GPa. This is the first time that LSO's Young's modulus is reported. Flexural strength,Vickers hardness, fracture toughness (KIC) from microindentation cracks and nanohardness were also measured. Scanning electron micrography was performed on both a sub-sintered and the most sintered sample, and the microstructure and fracture mechanism were analyzed. In general, the mechanical behaviour is similar to other intermediate temperature solid oxide electrolytes. The fracture mechanism of the most sintered sample makes it well-suited for future SOFC applications.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/164068
url http://sedici.unlp.edu.ar/handle/10915/164068
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0272-8842
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ceramint.2018.05.043
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
14348-14354
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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