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Analysis of secondary phases segregated and precipitated in SnO2-based varistors

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dc.contributor.authorParra, R.
dc.contributor.authorCastro, M. S.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.institutionUNMdP
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:26:21Z
dc.date.available2014-05-20T15:26:21Z
dc.date.issued2005-04-01
dc.description.abstractTransmission and scanning electron microscopy techniques were used to study the heterogeneities found in the microstructure of (SnO2Co3O4Nb2O5Fe2O3)-Co-.-Nb-.-Fe-. and (SnO2ZnONb2O5FC2O3)-Zn-.-Nb-.-F-. varistors. Second phases encountered both inside the grains and ingrain boundary regions were identified using energy dispersive spectrometry and electron diffraction patterns. Through the electrical characterisation, the presence of iron oxide among the additives was determined to highlight the non-linear properties of the specimens. A discussion on the influence of second phases on the non-linear features of these systems is also addressed. (C) 2004 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUNMdP, CONICET, Inst Mat Sci & Technol INTEMA, Mar Del Plata, Argentina
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent401-406
dc.identifierhttp://dx.doi.org/10.1016/j.jeurceramsoc.2004.02.010
dc.identifier.citationJournal of the European Ceramic Society. Oxford: Elsevier B.V., v. 25, n. 4, p. 401-406, 2005.
dc.identifier.doi10.1016/j.jeurceramsoc.2004.02.010
dc.identifier.issn0955-2219
dc.identifier.urihttp://hdl.handle.net/11449/36534
dc.identifier.wosWOS:000226924100011
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of the European Ceramic Society
dc.relation.ispartofjcr3.794
dc.relation.ispartofsjr1,068
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectelectron microscopypt
dc.subjectgrain boundariespt
dc.subjectmicrostructure-finalpt
dc.subjectvaristorspt
dc.subjectSnO2pt
dc.titleAnalysis of secondary phases segregated and precipitated in SnO2-based varistorsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

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Araraquara - IQAR - Instituto de Química