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, J. J., Laguna-Bercero, M. A., Larrea, Ángel, Orera, V. M., Segarra, M.
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/53134
Acceso en línea:http://hdl.handle.net/10261/53134
Access Level:acceso abierto
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spelling Mechanical properties of highly textured porous Ni-YSZ and Co-YSZ cermets produced from directionally solidified eutecticsRoa, J. J.Laguna-Bercero, M. A.Larrea, ÁngelOrera, V. M.Segarra, M.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. © 2011 Elsevier Ltd and Techna Group S.r.l.We would like to thank Spanish Government and the FEDER program within the projects: MAT2008-06785-C02- 01, MAT2009-14324-C02-01, GA-LC-009/2009, CEN20071018 and CIT-120000-2007-50, by the financial support and Serveis Cientificotècnics (Universidad de Barcelona) for AFM data.Peer ReviewedElsevierUniversidad de BarcelonaEuropean CommissionMinisterio de Economía y Competitividad (España)2012201220112012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionhttp://hdl.handle.net/10261/53134reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.ceramint.2011.05.051info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/531342026-05-22T06:33:51Z
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, J. J.
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, J. J.
Laguna-Bercero, M. A.
Larrea, Ángel
Orera, V. M.
Segarra, M.
author Roa, J. J.
author_facet Roa, J. J.
Laguna-Bercero, M. A.
Larrea, Ángel
Orera, V. M.
Segarra, M.
author_role author
author2 Laguna-Bercero, M. A.
Larrea, Ángel
Orera, V. M.
Segarra, M.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Barcelona
European Commission
Ministerio de Economía y Competitividad (España)
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. © 2011 Elsevier Ltd and Techna Group S.r.l.
publishDate 2011
dc.date.none.fl_str_mv 2011
2012
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
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info:eu-repo/semantics/submittedVersion
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status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/53134
url http://hdl.handle.net/10261/53134
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.ceramint.2011.05.051
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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