Electric field assisted sintering of electroceramics and in situ analysis by impedance spectroscopy

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dc.contributor.authorMUCCILLO, R.
dc.contributor.authorMUCCILLO, E.N.S.
dc.coverageInternacionalpt_BR
dc.date.accessioned2017-08-15T15:56:42Z
dc.date.available2017-08-15T15:56:42Z
dc.date.issued2017pt_BR
dc.description.abstractSince the first report several years ago on pressureless sintering of yttria-stabilized zirconia with several seconds at relatively low temperatures by application of an electric field, an increasing number of scientific reports have been published on sintering ion conducting, semiconducting and insulating polycrystalline electroceramics. The electric field-assisted sintering consists in applying an electric field either during heating up or under isothermal conditions at temperatures well below the ones applied during conventional sintering. Besides the lower temperatures, shorter times are required to achieve full densification without considerable grain growth, evidencing the potential of this technique for obtaining functional electroceramics with improved mechanical and electrical properties at lower costs. Even though some mechanisms have been suggested, the description of the phenomenon at the microscopic level leading to full densification with seconds remains a challenge. We report in situ electrochemical impedance spectroscopy of an ionic conductor (ZrO2: 8 mol% Y2O3), a proton conductor (BaCe0.8Zr0.1Y0.1O3-delta) and a semiconductor (SnO2: 0.5 mol% MnO2) performed during conventional and electric field-assisted sintering experiments. Attention is also directed on the description of the experimental setups and procedures and to the evaluation of microstructural details by scanning electron microscopy. The analysis of the in situ impedance spectroscopy diagrams under heating (before either conventional or electric field-assisted sintering) and under cooling (after) provides evidence of densification with pore elimination and welding of grains. Prospects for future experimental and simulation research work are outlined.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipIDFAPESP: 13/07296-2pt_BR
dc.description.sponsorshipIDCNPq: 470952/2013-0; 303483/2013-0pt_BR
dc.format.extent24-42pt_BR
dc.identifier.citationMUCCILLO, R.; MUCCILLO, E.N.S. Electric field assisted sintering of electroceramics and in situ analysis by impedance spectroscopy. <b>Journal of Electroceramics</b>, v. 38, n. 1, p. 24-42, 2017. DOI: <a href="https://dx.doi.org/10.1007/s10832-016-0054-x">10.1007/s10832-016-0054-x</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/27710.
dc.identifier.doi10.1007/s10832-016-0054-xpt_BR
dc.identifier.fasciculo1pt_BR
dc.identifier.issn1385-3449pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9219-388X
dc.identifier.orcidhttps://orcid.org/0000-0002-8598-279X
dc.identifier.percentilfi72.22en
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/27710
dc.identifier.vol38pt_BR
dc.relation.ispartofJournal of Electroceramicspt_BR
dc.rightsopenAccesspt_BR
dc.subjectsintering
dc.subjectelectric fields
dc.subjectimpedance
dc.subjectspectroscopy
dc.subjectyttrium
dc.subjectzirconium oxides
dc.subjectdilatometry
dc.subjectceramics
dc.titleElectric field assisted sintering of electroceramics and in situ analysis by impedance spectroscopypt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorELIANA NAVARRO DOS SANTOS MUCCILLO
ipen.autorREGINALDO MUCCILLO
ipen.codigoautor1298
ipen.codigoautor1165
ipen.contributor.ipenauthorELIANA NAVARRO DOS SANTOS MUCCILLO
ipen.contributor.ipenauthorREGINALDO MUCCILLO
ipen.date.recebimento17-08pt_BR
ipen.identifier.fi1.238pt_BR
ipen.identifier.ipendoc23938pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.range.fi0.001 - 1.499
ipen.range.percentilfi50.00 - 74.99
ipen.type.genreArtigo
relation.isAuthorOfPublicationbc09f7ae-f25e-4f60-87a3-0c89989e8304
relation.isAuthorOfPublication97e4b17d-7782-42dc-a38c-60d9b37440a4
relation.isAuthorOfPublication.latestForDiscovery97e4b17d-7782-42dc-a38c-60d9b37440a4
sigepi.autor.atividadeMUCCILLO, R.:1165:720:Spt_BR
sigepi.autor.atividadeMUCCILLO, E.N.S.:1298:720:Npt_BR
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