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Microstructure and impedance spectroscopy of 3YTZP/SWNT ceramic nanocomposites

dc.creatorPoyato Galán, Rosalíaes
dc.creatorMacías Delgado, Julioes
dc.creatorGallardo López, Ángela Maríaes
dc.creatorMuñoz Bernabé, Antonioes
dc.creatorDomínguez Rodríguez, Arturoes
dc.date.accessioned2018-04-09T07:07:55Z
dc.date.available2018-04-09T07:07:55Z
dc.date.issued2015
dc.identifier.citationPoyato Galán, R., Macías Delgado, J., Gallardo López, A., Muñoz Bernabé, A. y Domínguez Rodríguez, A. (2015). Microstructure and impedance spectroscopy of 3YTZP/SWNT ceramic nanocomposites. Ceramics International, 41 (1), 12861-12868.
dc.identifier.issn0272-8842es
dc.identifier.urihttps://hdl.handle.net/11441/72164
dc.description.abstractThis work provides new insights on microstructure and electrical properties of 3 mol% Y2O3–ZrO2 (3YTZP) composites with 0.5, 1, and 1.5 vol% single walled carbon nanotubes (SWNTs). The composites were spark plasma sintered (SPS) in identical conditions at 1250 °C from powder prepared by two different processing routines, with the aim of optimizing the SWNTs dispersion throughout the ceramic matrix. High densification and submicrometric grain size were achieved in all the composites. Electrical properties of the composites were characterized in a wide temperature range, and modeling of the impedance properties was approached by means of an equivalent circuit that allows separation of the individual SWNT bundles contribution to resistance from the resistance due to junctions between bundles. Effects of the homogeneous distribution of SWNTs at the ceramic grain boundaries on the crystalline phases, percolation threshold, total conductivity and evolution of junctions׳ resistivity with temperature were analyzed and discussed.es
dc.description.sponsorshipEspaña Ministerio de Ciencia e Innovación MAT2012-34217es
dc.description.sponsorshipJunta de Andalucia P12-FQM1079es
dc.formatapplication/pdfes
dc.language.isoenges
dc.publisherElsevieres
dc.relation.ispartofCeramics International, 41 (1), 12861-12868.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectB. Compositeses
dc.subjectCarbon nanotubeses
dc.subjectProcessinges
dc.subjectImpedance Spectroscopyes
dc.titleMicrostructure and impedance spectroscopy of 3YTZP/SWNT ceramic nanocompositeses
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.type.versioninfo:eu-repo/semantics/acceptedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Física de la Materia Condensadaes
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.ceramint.2015.06.123es
dc.identifier.doi10.1016/j.ceramint.2015.06.123es
idus.format.extent8 p.es
dc.journaltitleCeramics Internationales
dc.publication.volumen41es
dc.publication.issue1es
dc.publication.initialPage12861es
dc.publication.endPage12868es
dc.contributor.funderMinisterio de Ciencia e Innovación (MICIN). España
dc.contributor.funderJunta de Andalucía

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