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The effect of nitrogen on the structure and thermal properties of beryllium-containing Na-(Li)-Si-O-N glasses
Abstract
Two oxynitride glass series with the composition of 35Na2O-5BeO-(60-x)SiO2-xSi3N4 and 9Li2O- 27Na2O-5BeO-(59-x)SiO2-xSi3N4, were prepared. The glasses' topography and structure were studied by Scanning Electron Microscopy and Raman spectroscopy. The composition was analyzed by Inductively Coupled Plasma Optical Emission Spectrometer, SEM-EDS and nitrogen and oxygen elemental analyzer. Na-(Li)-Be-silicate glasses were found to contain up to approximately 3.4 (or 5.2 for EDS measurements) at.% of N, respectively. The samples were homogenous in their topography and compositions of their cross-sections. The presence of three-fold coordinated nitrogen atoms in Na-Be-Si-O-N glasses results in higher degree of polymerization as was observed by Raman spectroscopy. The spectrum of analogous glasses with lithium did not show a significant decrease in Q2 units but exhibit the presence of Q4 units which also indicates a polymerization of the network. The incorporation of nitrogen in these glasses leads to the increase of the glass transition temperature and thermal stability.
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Authors (7)
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B Jonson
- Linnaeus University Department of Building and Energy Technology
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D Möncke
- Alfred University Inamori School of Engineering
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E Kamitsos
- National Hellenic Research Foundation
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H Segawa
- National Institute for Materials Science
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S Ali
- Linnaeus University Department of Building and Energy Technology
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.jnoncrysol.2019.119585
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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JOURNAL OF NON-CRYSTALLINE SOLIDS
no. 522,
pages 1 - 8,
ISSN: 0022-3093 - Language:
- English
- Publication year:
- 2019
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.jnoncrysol.2019.119585
- Sources of funding:
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- SA, BJ and NAW acknowledge the financial support from the Crafoord Foundation (Grant No: 20160900). SA also acknowledges support from the Vinnova (Grant No. 2015-04809). DM thanks the Knowledge Foundation, Sweden (Grant No. 68110029) for financing her stay at Linnæus University. EIK acknowledges the project “National Infrastructure in Nanotechnology, Advanced Materials and Micro-/Nanoelectronics” (MIS 5002772) which is implemented under the Action “Reinforcement of the Research and Innovation Infrastructure”, funded by the Operational Programme “Competitiveness, Entrepreneurship and Innovation” (NSRF 2014-2020) and co-financed by Greece and the European Union (European Regional Development Fund).
- Verified by:
- Gdańsk University of Technology
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