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dc.contributor.editorPriya, Shashank
dc.contributor.editorNair, K. M.
dc.creatorMarković, Smilja
dc.creatorUskoković, Dragan
dc.date.accessioned2018-06-22T17:50:41Z
dc.date.available2018-06-22T17:50:41Z
dc.date.issued2010
dc.identifier.isbn978-047092716-8
dc.identifier.issn1042-1122
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/3411
dc.description.abstractBarium titanate stannate (BaTi1-xSnxO3, BTS) functionally graded materials (FGMs) with different Ti/Sn concentration gradients were prepared by the powder processing method followed by sintering. Firstly, with the aim of tailoring the concentration gradient of Ti/Sn, the main characteristics of BTS ingredients were studied. The influence of the Ti/Sn concentration gradient on the electrical characteristics of the FGMs was examined by impedance spectroscopy (IS). The grain-interior and grain boundary resistivity of the FGMs were distinguished and activation energies were calculated. It has been established that for the FGMs the activation energy deduced from the grain-interior conductivity (0.74-0.78 eV) is defined by chemical composition (intrinsic property) and that it does not depend on the Ti/Sn concentration gradient. Quite contrary, the activation energy for the grain boundary conductivity (1.03-1.29 eV) is determined by the microstructural gradient which is a direct consequence of the concentration gradient. The results of IS indicate that there are no insulator interfaces (cracks and/or delamination) between graded layers in FGMs. This assumption was confirmed by in situ monitoring of the sintering processes in thermal microscope, and furthermore, by SEM analysis of FGMs in cross-sectional view.
dc.publisherHoboken, NJ : John Wiley & Sons
dc.sourceAdvances in Electroceramic Materials II
dc.titleBarium titanate stannate functionally graded materials: Choosing of the Ti/Sn concentration gradient and the influence of the gradient on electrical properties
dc.typeconferenceObject
dc.rights.licenserestrictedAccess
dc.rights.licenseARR
dcterms.abstractМарковић, Смиља; Ускоковић, Драган;
dc.citation.spage3
dc.citation.epage17
dc.citation.volume221
dc.identifier.doi10.1002/9780470930915.ch1
dc.identifier.scopus2-s2.0-78149315301
dc.description.otherCeramic Transactions, Volume 221
dc.description.other2009 Materials Science and Technology Conference (MS&T09) held at Pittsburgh, Pennsylvania, USA, October 25-29, 2009
dc.type.versionpublishedVersion
dc.identifier.fulltexthttp://dais.sanu.ac.rs/bitstream/handle/123456789/3411/10.1002-9780470930915.ch1.pdf


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