Electron microscopy investigation of the microstructure and elemental composition of barium titanate precipitated in oxide glasses

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creativework.keywordsBarium titanate, Controlled crystallization, Glass-ceramics, Microstructure
creativework.publisherUniversity of Chemical Technology and Metallurgyjournal@uctm.eduen
dc.contributor.authorHarizanova R.
dc.contributor.authorVladislavova L.
dc.contributor.authorAvdeev G.
dc.contributor.authorBocker C.
dc.contributor.authorGugov I.
dc.contributor.authorRüssel C.
dc.date.accessioned2024-07-16T11:16:49Z
dc.date.accessioned2024-07-16T11:18:53Z
dc.date.available2024-07-16T11:16:49Z
dc.date.available2024-07-16T11:18:53Z
dc.date.issued2018-01-01
dc.description.abstractThe present work reports on the synthesis of glasses for two different ratios of alumina to sodium oxide in compositions of the system Na2O/Al2O3/BaO/TiO2/B2O3/SiO2 with addition of Fe2O3. Barium titanate-based glass-ceramics of different average crystallite sizes, depending on the ratio Na/Al-oxides, are precipitated after appropriate thermal treatment of the glasses prepared. The phase composition analyses performed by X-ray diffraction show the formation of cubic barium titanate, BaTiO3 as a main phase and also, some BaTi0.75Fe0.25O2.888. Additional crystalline phases, such as nepheline, NaAlSiO4 appear in the course of thermal treatments at higher temperatures and longer annealing times. The scanning electron micrographs of the prepared glass-ceramics verify the presence of interconnected spherulitic structures, which correspond to barium titanate crystals and which start to grow with crystallization time increase. The morphology of the spherulitic crystals is elucidated by means of transmission electron microscopy. The elemental analysis carried out by TEM verifies the precipitation of two main crystalline phases - barium titanate and barium titanium iron oxide.
dc.identifier.issn1314-7978
dc.identifier.issn1314-7471
dc.identifier.scopusSCOPUS_ID:85055317352en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/1235
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85055317352&origin=inward
dc.titleElectron microscopy investigation of the microstructure and elemental composition of barium titanate precipitated in oxide glasses
dc.typeArticle
oaire.citation.issue6
oaire.citation.volume53
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