Improved crack resistance and thermal conductivity of cubic zirconia containing graphene nanoplatelets

Composites of 8 mol.% yttria-stabilized zirconia (8YSZ) with graphene nanoplatelets (GNP) have been pointed as alternative interconnectors in SOFC due to their mixed ionic-electronic conduction. Here we show that GNP addition provides rising crack-resistance behavior, with long crack toughness up to...

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Autores: Gómez-Gómez, A., Ramírez, C., Llorente, J., Garcia, A., Moreno Pedraz, Pablo Manuel, Reveron, H., Chevalier, J., Osendi, M.I., Belmonte, M., Miranzo, P.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/146597
Acceso en línea:http://hdl.handle.net/10366/146597
Access Level:acceso abierto
Palabra clave:Zirconia
Graphene nanoplatelets
Composites
R-curve
Thermal conductivity
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spelling Improved crack resistance and thermal conductivity of cubic zirconia containing graphene nanoplateletsGómez-Gómez, A.Ramírez, C.Llorente, J.Garcia, A.Moreno Pedraz, Pablo ManuelReveron, H.Chevalier, J.Osendi, M.I.Belmonte, M.Miranzo, P.ZirconiaGraphene nanoplateletsCompositesR-curveThermal conductivityComposites of 8 mol.% yttria-stabilized zirconia (8YSZ) with graphene nanoplatelets (GNP) have been pointed as alternative interconnectors in SOFC due to their mixed ionic-electronic conduction. Here we show that GNP addition provides rising crack-resistance behavior, with long crack toughness up to 78% higher than that of 8YSZ, also improving its thermal conductivity (up to 6 times for the in-plane direction). Toughness versus crack length is measured for 7 and 11 vol.% of GNP using single edge V-notched beam technique and ultrashort pulsed laser notching; and thermal behavior is analyzed by the laser flash method. Materials also have highly anisotropic coefficient of thermal expansion. These properties contribute to enhance their performance under the harsh operating conditions of SOFC, as thermal residual stresses could be reduced while significantly improving the system mechanical stability. Moreover, the heat transfer may be enhanced especially along the interface direction which would increase the system efficiency.This work was supported by Spanish project RTI2018-095052-B-I00, Ministerio de Ciencia, Innovacion y Universidades, Spain (MCIU/AEI/FEDER, UE). AG and PM acknowledge support from Ministerio de Economía, Industria y Competitividad, Spanish government (Project FIS2017- 87970-R) and Junta de Castilla y León, Spain (Project SA287P18). C. R. thanks the financial support by MCIU under contract IJCI-2017-34724 of “Juan de la Cierva” Program.202120212020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10366/146597reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésRTI2018-095052-B-I00Project FIS2017- 87970-RProject SA287P18IJCI-2017-34724Attribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1465972026-06-07T06:28:51Z
dc.title.none.fl_str_mv Improved crack resistance and thermal conductivity of cubic zirconia containing graphene nanoplatelets
title Improved crack resistance and thermal conductivity of cubic zirconia containing graphene nanoplatelets
spellingShingle Improved crack resistance and thermal conductivity of cubic zirconia containing graphene nanoplatelets
Gómez-Gómez, A.
Zirconia
Graphene nanoplatelets
Composites
R-curve
Thermal conductivity
title_short Improved crack resistance and thermal conductivity of cubic zirconia containing graphene nanoplatelets
title_full Improved crack resistance and thermal conductivity of cubic zirconia containing graphene nanoplatelets
title_fullStr Improved crack resistance and thermal conductivity of cubic zirconia containing graphene nanoplatelets
title_full_unstemmed Improved crack resistance and thermal conductivity of cubic zirconia containing graphene nanoplatelets
title_sort Improved crack resistance and thermal conductivity of cubic zirconia containing graphene nanoplatelets
dc.creator.none.fl_str_mv Gómez-Gómez, A.
Ramírez, C.
Llorente, J.
Garcia, A.
Moreno Pedraz, Pablo Manuel
Reveron, H.
Chevalier, J.
Osendi, M.I.
Belmonte, M.
Miranzo, P.
author Gómez-Gómez, A.
author_facet Gómez-Gómez, A.
Ramírez, C.
Llorente, J.
Garcia, A.
Moreno Pedraz, Pablo Manuel
Reveron, H.
Chevalier, J.
Osendi, M.I.
Belmonte, M.
Miranzo, P.
author_role author
author2 Ramírez, C.
Llorente, J.
Garcia, A.
Moreno Pedraz, Pablo Manuel
Reveron, H.
Chevalier, J.
Osendi, M.I.
Belmonte, M.
Miranzo, P.
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Zirconia
Graphene nanoplatelets
Composites
R-curve
Thermal conductivity
topic Zirconia
Graphene nanoplatelets
Composites
R-curve
Thermal conductivity
description Composites of 8 mol.% yttria-stabilized zirconia (8YSZ) with graphene nanoplatelets (GNP) have been pointed as alternative interconnectors in SOFC due to their mixed ionic-electronic conduction. Here we show that GNP addition provides rising crack-resistance behavior, with long crack toughness up to 78% higher than that of 8YSZ, also improving its thermal conductivity (up to 6 times for the in-plane direction). Toughness versus crack length is measured for 7 and 11 vol.% of GNP using single edge V-notched beam technique and ultrashort pulsed laser notching; and thermal behavior is analyzed by the laser flash method. Materials also have highly anisotropic coefficient of thermal expansion. These properties contribute to enhance their performance under the harsh operating conditions of SOFC, as thermal residual stresses could be reduced while significantly improving the system mechanical stability. Moreover, the heat transfer may be enhanced especially along the interface direction which would increase the system efficiency.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/146597
url http://hdl.handle.net/10366/146597
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv RTI2018-095052-B-I00
Project FIS2017- 87970-R
Project SA287P18
IJCI-2017-34724
dc.rights.none.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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