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dc.contributorRistić, Momčilo M.
dc.creatorPetrović, Vera
dc.creatorMaričić, Aleksa
dc.creatorLabus, Nebojša
dc.creatorRistić, Momčilo M.
dc.date.accessioned2017-06-10T15:45:07Z
dc.date.issued2007
dc.identifier.issn1820-7413 (Online)
dc.identifier.issn0350-820X (Print)
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/224
dc.description.abstractMaterials applied in electronics such as multilayer capacitors are an important field of ceramic materials. Magnesium titanate based dielectric materials are used for producing type-I capacitors. A common way of obtaining this material is a solid-state reaction during reaction sintering. The process of sintering can be enhanced if mechanical activation precedes. In this work starting powders of magnesium carbonate (MgCO3) and titanium dioxide (TiO2) with a rutile crystal modification were weighed to attain a 1:1 molar MgCO3:TiO2 ratio. Mechanical activation of the starting mixture was performed by high energy ball milling using ZrO balls and vessels with a ball to powder mass ratio of 40:1. The observed grinding times were 15, 30, 60 and 120 minutes. Powder characterization was conducted using X ray powder diffraction, DTA analysis up to 1000 o C and particle morphology changes were observed with Scanning Electron Microscopy. Isothermal sintering of compacted powders was conducted at 1100ºC during 30, 60 and 180 minutes. For specimens synthesized in such a manner, microwave dielectric properties were measured, quality factor Q, specific electrical resistivity (ρ) and the dielectric constant (Єr). In this work we explain the influence of mechanical activation on the MgCO3-TiO2 system leading to titanate formation during sintering, as well as induced changes in microwave dielectric properties.en
dc.format39 1 (2007) 59-65
dc.formatapplication/pdf
dc.languageen
dc.publisherBelgrade : International Institute for the Science of Sintering
dc.rightsopenAccess
dc.sourceScience of Sinteringen
dc.subjectsintering
dc.subjectMgO
dc.subjectTiO2
dc.subjectdielectric constant
dc.subjectquality factor
dc.subjectspecific electrical resistivity
dc.titleInfluence of mechanical activation on synthesis and properties of the MgO-TiO2 systemen
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractМаричић, Aлекса; Ристић, Момчило; Лабус, Небојша; Петровић, Вера;
dc.citation.spage59
dc.citation.epage65
dc.citation.volume31
dc.citation.issue1
dc.identifier.wos000247123000008
dc.identifier.doi10.2298/SOS0701059P
dc.type.versionpublishedVersion
dc.identifier.fulltexthttp://dais.sanu.ac.rs/bitstream/handle/123456789/224/0350-820X0701059P.pdf


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