Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5749
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dc.contributor.authorTopuz, Berna-
dc.contributor.authorŞimşek, Deniz-
dc.contributor.authorÇiftçioğlu, Muhsin-
dc.date.accessioned2017-06-13T07:41:52Z-
dc.date.available2017-06-13T07:41:52Z-
dc.date.issued2014-
dc.identifier.citationTopuz, B., Şimşek, D., and Çiftçioğlu, M. (2014). Preparation of monodisperse silica spheres and determination of their densification behaviour. Ceramics International, 41(1), 43-52. doi:10.1016/j.ceramint.2014.07.112en_US
dc.identifier.issn0272-8842-
dc.identifier.issn1873-3956-
dc.identifier.urihttps://doi.org/10.1016/j.ceramint.2014.07.112-
dc.identifier.urihttp://hdl.handle.net/11147/5749-
dc.description.abstractMonodisperse silica spheres in the 50-520 nm size range were prepared by using the Stober process. Diffusive growth has been determined from Nielsen chronomal analysis for the 520 and 310 nm monodisperse silica spheres. The densification behaviour and evolution of the microstructure of the sphere compacts indicated an inverse dependence of shrinkage rate on the sphere size due to viscous sintering. The increase in sphere size from 50 to 500 nm shifted the densification temperature from ∼ 1120 °C to 1240 °C. The amorphous nature of the spheres was conserved up to 1200 °C where cristobalite crystal nucleation started and complete transformation to cristobalite phase has been observed upon heat treatment at 1300 °C. The activation energies for viscous sintering according to the Frenkel and Mackenzie/Shuttleworth models were calculated as 125 and 335 kJ/mol, respectively. These substantially low activation energies can be attributed to the presence of a significant level of silanol groups.en_US
dc.language.isoenen_US
dc.publisherElsevier Ltd.en_US
dc.relation.ispartofCeramics Internationalen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectDensificationen_US
dc.subjectGrowth mechanismen_US
dc.subjectSilica spheresen_US
dc.subjectStober processen_US
dc.subjectActivation energyen_US
dc.titlePreparation of monodisperse silica spheres and determination of their densification behaviouren_US
dc.typeArticleen_US
dc.authoridTR130952en_US
dc.authoridTR11652en_US
dc.institutionauthorTopuz, Berna-
dc.institutionauthorŞimşek, Deniz-
dc.institutionauthorÇiftçioglu, Muhsin-
dc.departmentİzmir Institute of Technology. Chemical Engineeringen_US
dc.identifier.volume41en_US
dc.identifier.issue1en_US
dc.identifier.startpage43en_US
dc.identifier.endpage52en_US
dc.identifier.wosWOS:000346216300005en_US
dc.identifier.scopus2-s2.0-84922769642en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1016/j.ceramint.2014.07.112-
dc.relation.doi10.1016/j.ceramint.2014.07.112en_US
dc.coverage.doi10.1016/j.ceramint.2014.07.112en_US
dc.identifier.wosqualityQ1-
dc.identifier.scopusqualityQ1-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.openairetypeArticle-
item.languageiso639-1en-
item.fulltextWith Fulltext-
crisitem.author.dept03.02. Department of Chemical Engineering-
crisitem.author.dept03.02. Department of Chemical Engineering-
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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