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dc.creatorFilipović, Suzana
dc.creatorObradović, Nina
dc.creatorMarković, Smilja
dc.creatorMitrić, Miodrag
dc.creatorBalać, Igor
dc.creatorĐorđević, Antonije
dc.creatorPavlović, Vladimir B.
dc.date.accessioned2020-01-10T11:21:54Z
dc.date.issued2019
dc.identifier.issn0921-8831
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0921883119302596
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/7027
dc.description.abstractAlumina-based compounds have many technological applications and attract great attention even after decades of investigation, due to their good chemical, electrical, and mechanical properties. A mixture of several alumina modifications (α-, κ-, γ-Al2O3) doped with 1 wt% of Mn2O3 was used for this experiment. The powder was mechanically activated for 60 min in an ethanol medium. After compaction, green bodies were sintered in the temperature range from 1200 to 1400 °C. Microstructures of the obtained specimens were investigated by scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDS). The influence of morphological changes on electrical and mechanical properties was examined in detail. We have developed a test fixture and corresponding software for measurement of the relative dielectric permittivity and the loss tangent of ceramic specimens. This new method overcomes the problems of dimensions and shape of samples, as well as the problem of applying silver paste. The accuracy is around 2% for ε'r and 0.003 for tanδ. We demonstrate that the mechanical activation (MA) has the dominant influence on lowering the characteristic temperatures and microstructure development, which further leads to increased permittivity and tensile strength.
dc.languageen
dc.publisherElsevier
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)/45019/RS//
dc.rightsembargoedAccess
dc.sourceAdvanced Powder Technology
dc.subjectalumina
dc.subjectceramics
dc.subjectproperties
dc.subjectsintering
dc.titleThe effect of ball milling on properties of sintered manganese-doped alumina
dc.typearticleen
dc.rights.licenseBY-NC-ND
dcterms.abstractЂорђевић, Aнтоније; Павловић, Владимир Б.; Балаћ, Игор; Филиповић, Сузана; Митрић, Миодраг; Марковић, Смиља; Обрадовић, Нина;
dc.citation.spage2533
dc.citation.epage2540
dc.citation.volume30
dc.citation.issue11
dc.identifier.wos000490130200009
dc.identifier.doi10.1016/j.apt.2019.07.033
dc.identifier.scopus2-s2.0-85070548925
dc.description.otherThis is the peer reviewed version of the paper: Filipović, S., Obradović, N., Marković, S., Mitrić, M., Balać, I., Đorđević, A., Pavlović, V.B., 2019. The effect of ball milling on properties of sintered manganese-doped alumina. Advanced Powder Technology 30, 2533–2540. [https://doi.org/10.1016/j.apt.2019.07.033]
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