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Abstrakt
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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Autorzy (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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Pełna treść
- Wersja publikacji
- Accepted albo Published Version
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.jnoncrysol.2019.119532
- Licencja
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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuł w czasopiśmie wyróżnionym w JCR
- Opublikowano w:
-
JOURNAL OF NON-CRYSTALLINE SOLIDS
nr 521,
strony 1 - 10,
ISSN: 0022-3093 - Język:
- angielski
- Rok wydania:
- 2019
- Opis bibliograficzny:
- 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:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.jnoncrysol.2019.119532
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 157 razy
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