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The influence of Be addition on the structure and thermal properties of alkali-silicate glasses
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. Gdańsk University of Technology, Poland.
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (Glass group)
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. Alfred University, USA;National Hellenic Research Foundation, Greece.
National Hellenic Research Foundation, Greece.
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2019 (English)In: Journal of Non-Crystalline Solids, ISSN 0022-3093, E-ISSN 1873-4812, Vol. 521, article id 119532Article in journal (Refereed) Published
Abstract [en]

Be-Na-(Li)-Si oxide glasses containing up to 15 mol% of BeO were prepared. Their structure was characterized by X-ray powder diffraction and Raman as well as infrared spectroscopic techniques, while their chemical compositions were examined by Inductively Coupled Plasma Optical Emission Spectrometry. All materials were found to be amorphous and contain Al contaminations from minor dissolution of the alumina crucibles. The results of Raman and IR spectroscopies showed that BeO addition to Na-(Li)-Si glass systems resulted in the formation of [BeO4/2]2− tetrahedra which are inserted into the silicate glass network, demonstrating the intermediate glass-forming role of BeO. In parallel, the effective destruction of Si-O-Si bridges was observed by vibrational spectroscopy. The glass transition temperature was studied by Differential Thermal Analysis and found to range from about 431 °C to 551 °C. A significant increase in Tg by 70 °C was found as SiO2 was substituted by up to 15 mol% BeO.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 521, article id 119532
Keywords [en]
Beryllium-containing glasses Raman spectroscopy IR spectroscopy Alkali-silicate glasses Thermal properties
National Category
Ceramics Other Materials Engineering Materials Chemistry
Research subject
Technology (byts ev till Engineering), Glass Technology
Identifiers
URN: urn:nbn:se:lnu:diva-87020DOI: 10.1016/j.jnoncrysol.2019.119532Scopus ID: 2-s2.0-85068177897OAI: oai:DiVA.org:lnu-87020DiVA, id: diva2:1339371
Funder
The Crafoord Foundation, 20160900ÅForsk (Ångpanneföreningen's Foundation for Research and Development), 14-457Vinnova, 2015-04809Knowledge Foundation, 68110029Available from: 2019-07-29 Created: 2019-07-29 Last updated: 2019-09-03Bibliographically approved

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Wójcik, Natalia A.Ali, SharafatMöncke, DorisJonson, Bo
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