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Influence of mechanical activation on synthesis and properties of the MgO-TiO2 system
dc.contributor | Ristić, Momčilo M. | |
dc.creator | Petrović, Vera | |
dc.creator | Maričić, Aleksa | |
dc.creator | Labus, Nebojša | |
dc.creator | Ristić, Momčilo M. | |
dc.date.accessioned | 2017-06-10T15:45:07Z | |
dc.date.issued | 2007 | |
dc.identifier.issn | 1820-7413 | |
dc.identifier.issn | 0350-820X | |
dc.identifier.uri | https://dais.sanu.ac.rs/123456789/224 | |
dc.description.abstract | Materials 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.format | 39 1 (2007) 59-65 | |
dc.format | application/pdf | |
dc.language | en | |
dc.publisher | Belgrade : International Institute for the Science of Sintering | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Science of Sintering | en |
dc.subject | sintering | |
dc.subject | MgO | |
dc.subject | TiO2 | |
dc.subject | dielectric constant | |
dc.subject | quality factor | |
dc.subject | specific electrical resistivity | |
dc.title | Influence of mechanical activation on synthesis and properties of the MgO-TiO2 system | en |
dc.type | article | |
dc.rights.license | BY | |
dcterms.abstract | Маричић, Aлекса; Ристић, Момчило; Лабус, Небојша; Петровић, Вера; | |
dc.citation.spage | 59 | |
dc.citation.epage | 65 | |
dc.citation.volume | 31 | |
dc.citation.issue | 1 | |
dc.identifier.wos | 000247123000008 | |
dc.identifier.doi | 10.2298/SOS0701059P | |
dc.identifier.scopus | 2-s2.0-70849104590 | |
dc.type.version | publishedVersion | |
dc.identifier.fulltext | https://dais.sanu.ac.rs/bitstream/id/20123/221.pdf | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_dais_224 |