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

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...

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Autores principales: Moreira Toja, Ramiro Julián, Rendtorff Birrer, Nicolás Maximiliano, Aglietti, Esteban Fausto, Uchikoshi, Tetsuo, Sakka, Yoshio, Suárez, Gustavo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Química
Lanthanum silicate oxyapatite
Mechanical properties
Young's modulus
Fracture
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/164068
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-164068
record_format dspace
spelling I19-R120-10915-1640682024-03-21T04:07:01Z http://sedici.unlp.edu.ar/handle/10915/164068 Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite Moreira Toja, Ramiro Julián Rendtorff Birrer, Nicolás Maximiliano Aglietti, Esteban Fausto Uchikoshi, Tetsuo Sakka, Yoshio Suárez, Gustavo 2018 2024-03-20T16:45:38Z en Química Lanthanum silicate oxyapatite Mechanical properties Young's modulus Fracture 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 Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 14348-14354
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Lanthanum silicate oxyapatite
Mechanical properties
Young's modulus
Fracture
spellingShingle Química
Lanthanum silicate oxyapatite
Mechanical properties
Young's modulus
Fracture
Moreira Toja, Ramiro Julián
Rendtorff Birrer, Nicolás Maximiliano
Aglietti, Esteban Fausto
Uchikoshi, Tetsuo
Sakka, Yoshio
Suárez, Gustavo
Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite
topic_facet Química
Lanthanum silicate oxyapatite
Mechanical properties
Young's modulus
Fracture
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.
format Articulo
Articulo
author Moreira Toja, Ramiro Julián
Rendtorff Birrer, Nicolás Maximiliano
Aglietti, Esteban Fausto
Uchikoshi, Tetsuo
Sakka, Yoshio
Suárez, Gustavo
author_facet Moreira Toja, Ramiro Julián
Rendtorff Birrer, Nicolás Maximiliano
Aglietti, Esteban Fausto
Uchikoshi, Tetsuo
Sakka, Yoshio
Suárez, Gustavo
author_sort Moreira Toja, Ramiro Julián
title Influence of the porosity caused by incomplete sintering on the mechanical behaviour of lanthanum silicate oxyapatite
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
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/164068
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AT rendtorffbirrernicolasmaximiliano influenceoftheporositycausedbyincompletesinteringonthemechanicalbehaviouroflanthanumsilicateoxyapatite
AT agliettiestebanfausto influenceoftheporositycausedbyincompletesinteringonthemechanicalbehaviouroflanthanumsilicateoxyapatite
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