Electrical behavior and microstructural features of electric field-assisted and conventionally sintered 3 mol % yttria-stabilized zirconia

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dc.contributor.authorCARVALHO, SABRINA G.M.
dc.contributor.authorMUCCILLO, ELIANA N.S.
dc.contributor.authorMUCCILLO, REGINALDO
dc.coverageInternacionalpt_BR
dc.date.accessioned2018-07-16T10:35:39Z
dc.date.available2018-07-16T10:35:39Z
dc.date.issued2018pt_BR
dc.description.abstractZrO2: 3 mol % Y2O3 (3YSZ) polycrystalline pellets were sintered at 1400 C and by applying an alternating current (AC) electric field at 1000 C. An alumina sample holder with platinum wires for connecting the sample to a power supply was designed for the electric field-assisted sintering experiments. The apparent density was evaluated with the Archimedes technique, the grain size distribution by analysis of scanning electron microscopy images, and the electrical behavior by the impedance spectroscopy technique. Sintering with the application of AC electric fields to 3YSZ enhances its ionic conductivity. An explanation is proposed, based on the dissolution back to the bulk of chemical species, which are depleted at the grain boundaries, leading to an increase in the oxygen vacancy concentration. For the enhancement of the grain boundary conductivity, an explanation is given based on the diminution of the concentration of depleted chemical species, which migrate to the bulk. This migration leads to a decrease of the potential barrier of the space charge region, known to be responsible for blocking the oxide ions through the intergranular region. Moreover, the heterogeneity of the distribution of the grain sizes is ascribed to the skin effect, the tendency of the AC current density to be largest near the surface, decreasing towards the bulk.pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipIDCNPq: 470952/2013-0; 303483/2013-0pt_BR
dc.description.sponsorshipIDFAPESP: 13/07296-2pt_BR
dc.format.extent1-10pt_BR
dc.identifier.citationCARVALHO, SABRINA G.M.; MUCCILLO, ELIANA N.S.; MUCCILLO, REGINALDO. Electrical behavior and microstructural features of electric field-assisted and conventionally sintered 3 mol % yttria-stabilized zirconia. <b>Ceramics</b>, v. 1, n. 1, p. 1-10, 2018. DOI: <a href="https://dx.doi.org/10.3390/ceramics1010002">10.3390/ceramics1010002</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/28936.
dc.identifier.doi10.3390/ceramics1010002pt_BR
dc.identifier.fasciculo1pt_BR
dc.identifier.issn2571-6131pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8598-279X
dc.identifier.orcidhttps://orcid.org/0000-0001-9219-388X
dc.identifier.percentilfiSem Percentilen
dc.identifier.percentilfiCiteScoreSem Percentil CiteScore
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/28936
dc.identifier.vol1pt_BR
dc.relation.ispartofCeramicspt_BR
dc.rightsopenAccesspt_BR
dc.subjectsintering
dc.subjectyttrium
dc.subjectyttrium oxides
dc.subjectzirconium oxides
dc.subjectimpedance
dc.subjectspectroscopy
dc.subjectmicrostructure
dc.subjectgrain size
dc.subjectionic conductivity
dc.titleElectrical behavior and microstructural features of electric field-assisted and conventionally sintered 3 mol % yttria-stabilized zirconiapt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorREGINALDO MUCCILLO
ipen.autorELIANA NAVARRO DOS SANTOS MUCCILLO
ipen.autorSABRINA GONCALVES DE MACEDO CARVALHO
ipen.codigoautor1165
ipen.codigoautor1298
ipen.codigoautor8206
ipen.contributor.ipenauthorREGINALDO MUCCILLO
ipen.contributor.ipenauthorELIANA NAVARRO DOS SANTOS MUCCILLO
ipen.contributor.ipenauthorSABRINA GONCALVES DE MACEDO CARVALHO
ipen.date.recebimento18-07pt_BR
ipen.identifier.fiSem F.I.pt_BR
ipen.identifier.fiCiteScoreSem CiteScore
ipen.identifier.ipendoc24720pt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublication97e4b17d-7782-42dc-a38c-60d9b37440a4
relation.isAuthorOfPublicationbc09f7ae-f25e-4f60-87a3-0c89989e8304
relation.isAuthorOfPublication73a1f4f9-fde3-4d8a-b3dc-ba27fc5efcf7
relation.isAuthorOfPublication.latestForDiscovery73a1f4f9-fde3-4d8a-b3dc-ba27fc5efcf7
sigepi.autor.atividadeMUCCILLO, ELIANA N.S.:1298:720:Npt_BR
sigepi.autor.atividadeMUCCILLO, REGINALDO:1165:720:Npt_BR
sigepi.autor.atividadeCARVALHO, SABRINA G.M.:8206:720:S
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