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The influence of Be addition on the structure and thermal properties of alkali-silicate glasses
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET). Gdańsk University of Technology, Poland.
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET). (Glass group)
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET). Alfred University, USA;National Hellenic Research Foundation, Greece.
National Hellenic Research Foundation, Greece.
Vise andre og tillknytning
2019 (engelsk)Inngår i: Journal of Non-Crystalline Solids, ISSN 0022-3093, E-ISSN 1873-4812, Vol. 521, artikkel-id 119532Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
Elsevier, 2019. Vol. 521, artikkel-id 119532
Emneord [en]
Beryllium-containing glasses Raman spectroscopy IR spectroscopy Alkali-silicate glasses Thermal properties
HSV kategori
Forskningsprogram
Teknik, Glasteknologi
Identifikatorer
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
Forskningsfinansiär
The Crafoord Foundation, 20160900ÅForsk (Ångpanneföreningen's Foundation for Research and Development), 14-457Vinnova, 2015-04809Knowledge Foundation, 68110029Tilgjengelig fra: 2019-07-29 Laget: 2019-07-29 Sist oppdatert: 2019-09-03bibliografisk kontrollert

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