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dc.creatorFilipović, Suzana
dc.creatorObradović, Nina
dc.creatorMarković, Smilja
dc.creatorĐorđević, Antonije
dc.creatorBalać, Igor
dc.creatorDapčević, Aleksandra
dc.creatorRogan, Jelena
dc.creatorPavlović, Vladimir B.
dc.date.accessioned2018-12-06T14:15:36Z
dc.date.available2018-12-06T14:15:36Z
dc.date.issued2018
dc.identifier.issn1820-7413
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/4537
dc.description.abstractCorundum (α-alumina) is a suitable material for usage in various industry fields owing to its chemical stability, electrical and mechanical features. It is known that properties of ceramics could be modified by addition of different oxides, as well as by changing the consolidation parameters. In this respect, alumina was doped with 1 wt.% of Cr2O3, Mn2O3 and NiO, followed by 1 hour of mechanical activation in a high-energy planetary ball mill. A sensitive dilatometer was used for sintering of powder mixtures up to 1400 oC and recording the obtained dilatation. The final density varied between cca. 1.9 and 3.3 g/cm3. Microstructural changes were detected by SEM measurements. Changes in electrical permittivity and loss tangent were associated with the preparation conditions (types of additives, duration of mechanical activation). For a given mixture, the sintering increases the relative permittivity and decreases losses, exhibiting the optimal values of 8.32 and 0.027, respectively, for the sample activated 60 minutes and sintered, with the addition of MnO2. Mechanical measurements indicate significant differences in strength with the addition of different transition metal oxides. Samples with Mn and Ni, activated and sintered, with strength of 121 and 86 MPa, respectively, have a significantly higher tensile strength than the other tested samples, due to their more compact microstructures.
dc.languageen
dc.publisherBelgrade : ETRAN
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172057/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45007/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45019/RS//
dc.rightsopenAccess
dc.sourceScience of Sintering
dc.subjectmechanical activation
dc.subjectalumina
dc.subjectsintering
dc.subjectSEM
dc.titlePhysical Properties of Sintered Alumina Doped with Different Oxides
dc.typearticleen
dc.rights.licenseBY
dcterms.abstractРоган, Јелена; Павловић, Владимир Б.; Филиповић, Сузана; Обрадовић, Нина; Марковић, Смиља; Ђорђевић, Aнтоније; Балаћ, Игор; Дапчевић, Aлександра;
dc.citation.spage409
dc.citation.epage419
dc.citation.volume50
dc.citation.issue4
dc.identifier.wos000455876800003
dc.identifier.doi10.2298/SOS1804409F
dc.identifier.scopus2-s2.0-85062894934
dc.type.versionpublishedVersion
dc.identifier.fulltexthttp://dais.sanu.ac.rs/bitstream/id/14170/Filipovic_Science-of-Sintering_50_2018_409-419.pdf


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