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dc.creatorMatijašević, Srđan D.
dc.creatorTošić, Mihajlo B.
dc.creatorStojanović, Jovica
dc.creatorGrujić, Snežana
dc.creatorŽivanović, Vladimir D.
dc.creatorNikolić, Jelena D.
dc.creatorĐošić, Marija
dc.date.accessioned2021-03-10T11:41:01Z
dc.date.available2021-03-10T11:41:01Z
dc.date.issued2012
dc.identifier.issn0862-5468
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/1981
dc.description.abstractPotassium germanate glass with molar ratio [GeO2]/[K2O] = 1.2 and Nb2O5 content of 34 mol% have been synthesized by a melt-quenching method. The crystallization behavior under non-isothermal and isothermal crystallization conditions was investigated. The results showed that this glass exposed complex primary crystallization. In the temperature range lt 800 degrees C primary phase is K3.8Nb5Ge3O20.4, while K6Nb6Ge4O26 appeared as primary phase at temperatures gt 800 degrees C. K10Nb22Ge4O68 and metastable KNbO3 and K4Nb6O17 were formed as secondary phases. The crystallization commenced at T gt 640 degrees C with high homogeneous nucleation rate and spherulite crystal growth morphology. DTA curves recorded for powder samples particle size lt 0.1 mm revealed three exothermic peaks and three endothermic peaks within temperature range of T = 640-940 degrees C, while the DTA curves recorded for powder samples particle size gt 0.1 mm showed two exothermic peaks and two endothermic peaks within temperature range of T = 640-1020 degrees C. The analysis of the dominant crystallization mechanism of powder glass sample and kinetics of crystallization is presented.en
dc.publisherUniversity of Chemistry and Technology, Prague
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172004/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/34001/RS//
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceCeramics - Silikaty
dc.subjectGermanate glassen
dc.subjectNiobium oxideen
dc.subjectCrystallizationen
dc.titleThe crystallization of potassium germanate glass with high content of niobium oxideen
dc.typearticle
dc.rights.licenseBY-NC-ND
dc.citation.epage68
dc.citation.issue1
dc.citation.other56(1): 61-68
dc.citation.rankM22
dc.citation.spage61
dc.citation.volume56
dc.identifier.fulltexthttp://TechnoRep.tmf.bg.ac.rs/bitstream/id/447/1978.pdf
dc.identifier.pmid
dc.identifier.rcubconv_6645
dc.identifier.scopus2-s2.0-84860789538
dc.identifier.wos000304224600011
dc.type.versionpublishedVersion


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