Electrophoretic deposition of (Zn, Nb)SnO2-films varistor superficially modified with Cr3+

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorMascarenhas Morandi Lustosa, Glauco Meireles
dc.creatorCampos da Costa, Joao Paulo de
dc.creatorPerazolli, Leinig Antonio
dc.creatorStojanovic, Biljana D.
dc.creatorZaghete, Maria Aparecida
dc.date2015-10-21T20:19:54Z
dc.date2016-10-25T21:08:19Z
dc.date2015-10-21T20:19:54Z
dc.date2016-10-25T21:08:19Z
dc.date2015-07-01
dc.date.accessioned2017-04-06T09:06:48Z
dc.date.available2017-04-06T09:06:48Z
dc.identifierJournal Of The European Ceramic Society, v. 35, n. 7, p. 2083-2089, 2015.
dc.identifier0955-2219
dc.identifierhttp://hdl.handle.net/11449/129081
dc.identifierhttp://acervodigital.unesp.br/handle/11449/129081
dc.identifierhttp://dx.doi.org/10.1016/j.jeurceramsoc.2015.01.022
dc.identifierWOS:000351794300011
dc.identifierhttp://www.sciencedirect.com/science/article/pii/S0955221915000254
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/939636
dc.descriptionRecently, there has been an important rise in the research and development aimed to improve the properties of SnO2-based varistors. Meanwhile, due to fact that ZnO-based varistors possess better electrical properties compared to SnO2-based varistors, it is shown that it is needful to add additives to improve their properties. In our study, the SnO2-powder was prepared by the chemical route (Pechini method) with addition of ZnO (1 mol%) and Nb2O5 (0.05 mol%). Films were obtained by the electrophoretic deposition of SnO2-based powder, following by microwave oven sintering. Cr3+ was deposited by EPD on the films surface and thermal treatment was carried out in a microwave oven. After electrical characterization the films showed nonlinear coefficient over 10, breakdown voltage around 60 V, low leakage current (approximate to 10(-6) A) and resistance over 200 kg cm. This indicates the efficiency of the used techniques to prepare varistor films with improved electrical properties after Cr3+ diffusion. (C) 2015 Elsevier Ltd. All rights reserved.
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageeng
dc.publisherElsevier B.V.
dc.relationJournal Of The European Ceramic Society
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectSnO2 varistor
dc.subjectPechini
dc.subjectElectrophoretic deposition
dc.subjectMicrowave sintering
dc.subjectCr3+ diffusion
dc.titleElectrophoretic deposition of (Zn, Nb)SnO2-films varistor superficially modified with Cr3+
dc.typeOtro


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