Electrical behavior of electric field-assisted pressureless sintered ceria-20 mol% samaria

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dc.contributor.authorREIS, SHIRLEY L.pt_BR
dc.contributor.authorCARVALHO, SABRINA G.M.pt_BR
dc.contributor.authorMUCCILLO, ELIANA N.S.pt_BR
dc.contributor.authorMUCCILLO, REGINALDOpt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2019-12-06T11:39:12Z
dc.date.available2019-12-06T11:39:12Z
dc.date.issued2019pt_BR
dc.description.abstractCeO2:20 mol% Sm2O3 green ceramic pellets were sintered conventionally at 1500 C/2 h and flash sintered by applying a 200 V cm􀀀1 electric field at 800 C, 1000 C and 1200 C. The thickness shrinkage of the pellets was followed bythe specimen being positioned inside a dilatometer adapted with platinum electrodes and terminal leads connected to a power supply for application of the electric voltage. The microstructure of the surfaces of the sintered samples were observed in a scanning electron microscope. The electrical properties were evaluated by the impedance spectroscopy technique in the 5 Hz–13 MHz frequency range from 210 C to 280 C. The main results show that (i) the final shrinkage level is nearly independent of the temperature when the electric field is applied and slightly better than that of the 1500 C sintered pellet, and (ii) the bulk conductivity of the sample flash sintered at 1200 C is similar to that of the sample sintered at 1500 C. The availability of a pathway for the electric current pulse derived from the applied electric field is proposed as the reason for the achieved shrinkages. Scavenging of the grain boundaries by Joule heating is proposed as the reason for the improved oxide ion bulk conductivity.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: 302357/2018-1; 305889/2018-4; 150101/2017-1pt_BR
dc.description.sponsorshipIDFAPESP: 13/07296-2; 17/11937-4pt_BR
dc.format.extent385-392pt_BR
dc.identifier.citationREIS, SHIRLEY L.; CARVALHO, SABRINA G.M.; MUCCILLO, ELIANA N.S.; MUCCILLO, REGINALDO. Electrical behavior of electric field-assisted pressureless sintered ceria-20 mol% samaria. <b>Ceramics</b>, v. 2, n. 2, p. 385-392, 2019. DOI: <a href="https://dx.doi.org/10.3390/ceramics2020030">10.3390/ceramics2020030</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/30423.
dc.identifier.doi10.3390/ceramics2020030pt_BR
dc.identifier.fasciculo2pt_BR
dc.identifier.issn2571-6131pt_BR
dc.identifier.orcid0000-0002-8598-279Xpt_BR
dc.identifier.orcid0000-0001-9219-388Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8598-279X
dc.identifier.orcidhttps://orcid.org/0000-0001-9219-388X
dc.identifier.percentilfiSem Percentilpt_BR
dc.identifier.percentilfiCiteScoreSem Percentil CiteScore
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/30423
dc.identifier.vol2pt_BR
dc.relation.ispartofCeramicspt_BR
dc.rightsopenAccesspt_BR
dc.subjectelectrical properties
dc.subjectsintering
dc.subjectsamarium
dc.subjectcerium
dc.subjectdoped materials
dc.subjectthermal expansion
dc.subjectdilatometry
dc.subjectimpedance
dc.subjectspectroscopy
dc.subjectceramics
dc.subjectscanning electron microscopy
dc.titleElectrical behavior of electric field-assisted pressureless sintered ceria-20 mol% samariapt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorSABRINA GONCALVES DE MACEDO CARVALHO
ipen.autorREGINALDO MUCCILLO
ipen.autorELIANA NAVARRO DOS SANTOS MUCCILLO
ipen.autorSHIRLEY LEITE DOS REIS
ipen.codigoautor8206
ipen.codigoautor1165
ipen.codigoautor1298
ipen.codigoautor3968
ipen.contributor.ipenauthorSABRINA GONCALVES DE MACEDO CARVALHO
ipen.contributor.ipenauthorREGINALDO MUCCILLO
ipen.contributor.ipenauthorELIANA NAVARRO DOS SANTOS MUCCILLO
ipen.contributor.ipenauthorSHIRLEY LEITE DOS REIS
ipen.date.recebimento19-12
ipen.identifier.fiSem F.I.pt_BR
ipen.identifier.fiCiteScoreSem CiteScore
ipen.identifier.ipendoc26437pt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublication73a1f4f9-fde3-4d8a-b3dc-ba27fc5efcf7
relation.isAuthorOfPublication97e4b17d-7782-42dc-a38c-60d9b37440a4
relation.isAuthorOfPublicationbc09f7ae-f25e-4f60-87a3-0c89989e8304
relation.isAuthorOfPublication37a8d93a-dd7a-4e10-aa00-eba2c03bebb6
relation.isAuthorOfPublication.latestForDiscovery37a8d93a-dd7a-4e10-aa00-eba2c03bebb6
sigepi.autor.atividadeMUCCILLO, REGINALDO:1165:720:Npt_BR
sigepi.autor.atividadeMUCCILLO, ELIANA N.S.:1298:720:Npt_BR
sigepi.autor.atividadeCARVALHO, SABRINA G.M.:8206:720:Npt_BR
sigepi.autor.atividadeREIS, SHIRLEY L.:3968:720:Spt_BR
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