Mechanical properties of highly textured porous Ni-YSZ and Co-YSZ cermets produced from directionally solidified eutectics

It is well known that several ceramic materials develop an usual; and sometimes unique; combination of properties as a result of mixing different phases with similar expansion coefficients. Sometimes they are elastically stiff, have low thermal expansion coefficients, and are resistant to chemical a...

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Autores: Roa Rovira, Joan Josep, Laguna Bercero, Miguel A., Larrea, Ángel, Orera, Víctor M., Segarra Rubí, Mercè
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2011
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/128208
Acceso en línea:https://hdl.handle.net/2445/128208
Access Level:acceso abierto
Palabra clave:Materials ceràmics
Propietats mecàniques
Ciència dels materials
Electroquímica
Ceramic materials
Mechanical properties
Materials science
Electrochemistry
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spelling Mechanical properties of highly textured porous Ni-YSZ and Co-YSZ cermets produced from directionally solidified eutecticsRoa Rovira, Joan JosepLaguna Bercero, Miguel A.Larrea, ÁngelOrera, Víctor M.Segarra Rubí, MercèMaterials ceràmicsPropietats mecàniquesCiència dels materialsElectroquímicaCeramic materialsMechanical propertiesMaterials scienceElectrochemistryIt is well known that several ceramic materials develop an usual; and sometimes unique; combination of properties as a result of mixing different phases with similar expansion coefficients. Sometimes they are elastically stiff, have low thermal expansion coefficients, and are resistant to chemical attack. As this paper will show, their mechanical properties are also enhanced. Nanoindentation is used to measure the mechanical properties for each phase of NiO-YSZ and CoO-YSZ eutectics produced by the laser floating zone technique, and also the analogues Ni-YSZ and Co-YSZ cermets produced by reduction from the eutectic precursors. The different tests have been performed at 100 nm, in order to obtain an imprint lower than the size of the secondary phase and extract the hardness and Young's modulus. Moreover, several tests have been performed at 2000 nm of indentation range to obtain the response of each material. The different imprints have been visualized by Atomic Force Microscopy.Elsevier B.V.2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/128208Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1016/j.ceramint.2011.05.051Ceramics International, 2011, vol. 37, num. 8, p. 3123-3131https://doi.org/10.1016/j.ceramint.2011.05.051(c) Elsevier B.V., 2011info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1282082026-05-27T06:46:51Z
dc.title.none.fl_str_mv Mechanical properties of highly textured porous Ni-YSZ and Co-YSZ cermets produced from directionally solidified eutectics
title Mechanical properties of highly textured porous Ni-YSZ and Co-YSZ cermets produced from directionally solidified eutectics
spellingShingle Mechanical properties of highly textured porous Ni-YSZ and Co-YSZ cermets produced from directionally solidified eutectics
Roa Rovira, Joan Josep
Materials ceràmics
Propietats mecàniques
Ciència dels materials
Electroquímica
Ceramic materials
Mechanical properties
Materials science
Electrochemistry
title_short Mechanical properties of highly textured porous Ni-YSZ and Co-YSZ cermets produced from directionally solidified eutectics
title_full Mechanical properties of highly textured porous Ni-YSZ and Co-YSZ cermets produced from directionally solidified eutectics
title_fullStr Mechanical properties of highly textured porous Ni-YSZ and Co-YSZ cermets produced from directionally solidified eutectics
title_full_unstemmed Mechanical properties of highly textured porous Ni-YSZ and Co-YSZ cermets produced from directionally solidified eutectics
title_sort Mechanical properties of highly textured porous Ni-YSZ and Co-YSZ cermets produced from directionally solidified eutectics
dc.creator.none.fl_str_mv Roa Rovira, Joan Josep
Laguna Bercero, Miguel A.
Larrea, Ángel
Orera, Víctor M.
Segarra Rubí, Mercè
author Roa Rovira, Joan Josep
author_facet Roa Rovira, Joan Josep
Laguna Bercero, Miguel A.
Larrea, Ángel
Orera, Víctor M.
Segarra Rubí, Mercè
author_role author
author2 Laguna Bercero, Miguel A.
Larrea, Ángel
Orera, Víctor M.
Segarra Rubí, Mercè
author2_role author
author
author
author
dc.subject.none.fl_str_mv Materials ceràmics
Propietats mecàniques
Ciència dels materials
Electroquímica
Ceramic materials
Mechanical properties
Materials science
Electrochemistry
topic Materials ceràmics
Propietats mecàniques
Ciència dels materials
Electroquímica
Ceramic materials
Mechanical properties
Materials science
Electrochemistry
description It is well known that several ceramic materials develop an usual; and sometimes unique; combination of properties as a result of mixing different phases with similar expansion coefficients. Sometimes they are elastically stiff, have low thermal expansion coefficients, and are resistant to chemical attack. As this paper will show, their mechanical properties are also enhanced. Nanoindentation is used to measure the mechanical properties for each phase of NiO-YSZ and CoO-YSZ eutectics produced by the laser floating zone technique, and also the analogues Ni-YSZ and Co-YSZ cermets produced by reduction from the eutectic precursors. The different tests have been performed at 100 nm, in order to obtain an imprint lower than the size of the secondary phase and extract the hardness and Young's modulus. Moreover, several tests have been performed at 2000 nm of indentation range to obtain the response of each material. The different imprints have been visualized by Atomic Force Microscopy.
publishDate 2011
dc.date.none.fl_str_mv 2011
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/2445/128208
url https://hdl.handle.net/2445/128208
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.ceramint.2011.05.051
Ceramics International, 2011, vol. 37, num. 8, p. 3123-3131
https://doi.org/10.1016/j.ceramint.2011.05.051
dc.rights.none.fl_str_mv (c) Elsevier B.V., 2011
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Elsevier B.V., 2011
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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