The effect of Co and Zn addition on densification and electrical properties of ceria-based nanopowders

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dc.contributor.authorVillas-Boas, Lúcia Adriana
dc.contributor.authorDe Paula Nascente, Pedro Augusto
dc.contributor.authorLanders, Richard
dc.contributor.authorCampos, Marcelo [UNESP]
dc.contributor.authorDe Souza, Dulcina Maria Pinatti Ferreira
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:06:13Z
dc.date.available2018-12-11T17:06:13Z
dc.date.issued2016-09-01
dc.description.abstractIn this work, cobalt and zinc-doped Ce0.8Gd0.2O1.9 samples were prepared starting from a commercial nanopowder and compared to the undoped material. The powder samples were pressed and afterwards sintered by a two-step procedure, before characterization by X-Ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Impedance Spectroscopy (IS) in air. Cobalt or zinc additions are effective as sintering aid, allowing peak sintering temperatures around 1000°C to reach densifications above of 93% of theoretical density, showing no evidence for the presence of secondary phases. The total conductivity at 800 °C of pressed Zn-doped samples (6.7x10-2 S/cm) and Co-doped samples (7.5x10-2 S/cm) is similar for undoped samples (7.2x10-2 S/cm) showing that Zn and Co has a positive effect on densification without compromising the electrical conductivity.en
dc.description.affiliationDepartment of Materials Engineering Federal University of São Carlos - UFSCAR
dc.description.affiliationDepartment of Applied Physics Campinas Institute of Physics State University of Campinas - UNICAMP
dc.description.affiliationDepartment of Biosystems Engineering São Paulo State University - UNESP Tupã Campus
dc.description.affiliationUnespDepartment of Biosystems Engineering São Paulo State University - UNESP Tupã Campus
dc.format.extent1057-1063
dc.identifierhttp://dx.doi.org/10.1590/1980-5373-MR-2015-0643
dc.identifier.citationMaterials Research, v. 19, n. 5, p. 1057-1063, 2016.
dc.identifier.doi10.1590/1980-5373-MR-2015-0643
dc.identifier.fileS1516-14392016000501057.pdf
dc.identifier.issn1516-1439
dc.identifier.lattes0717563036484228
dc.identifier.scieloS1516-14392016000501057
dc.identifier.scopus2-s2.0-84989822411
dc.identifier.urihttp://hdl.handle.net/11449/173549
dc.language.isoeng
dc.relation.ispartofMaterials Research
dc.relation.ispartofsjr0,398
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCobalt Addition
dc.subjectGadolinium-Doped Ceria
dc.subjectSOFC
dc.subjectXPS
dc.subjectZinc Addition
dc.titleThe effect of Co and Zn addition on densification and electrical properties of ceria-based nanopowdersen
dc.typeArtigo
unesp.author.lattes0717563036484228

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