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Abstract
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.
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Authors (8)
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Sharafat Ali profesor
- Linnæus University Department of Built Environment and Energy Technology,
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Doris Möncke profesor
- Alfred University Inamori School of Engineering at the New York State College of Ceramics
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N Tagiara
- National Hellenic Research Foundation Theoretical and Physical Chemistry Institute
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Efstratios Kamitsos profesor
- National Hellenic Research Foundation Theoretical and Physical Chemistry Institute
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H Segawa
- National Institute for Materials Science
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Mirva Eriksson DR
- Stockholm University Department of Inorganic Chemistry
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Bo Jonson profesor
- Linnæus University Department of Built Environment and Energy Technology,
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Full text
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.jnoncrysol.2019.119532
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
JOURNAL OF NON-CRYSTALLINE SOLIDS
no. 521,
pages 1 - 10,
ISSN: 0022-3093 - Language:
- English
- Publication year:
- 2019
- Bibliographic description:
- Wójcik N. A., Ali S., Möncke D., Tagiara N., Kamitsos E., Segawa H., Eriksson M., Jonson B.: The influence of Be addition on the structure and thermal properties of alkali-silicate glasses// JOURNAL OF NON-CRYSTALLINE SOLIDS. -Vol. 521, (2019), s.1-10
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.jnoncrysol.2019.119532
- Verified by:
- Gdańsk University of Technology
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