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The effect of nitrogen on the structure and thermal properties of beryllium-containing Na-(Li)-Si-O-N 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. National Hellenic Research Foundation, Greece;Alfred University, USA.
National Hellenic Research Foundation, Greece.
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1919 (English)In: Journal of Non-Crystalline Solids, ISSN 0022-3093, E-ISSN 1873-4812, Vol. 522, article id 119585Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Elsevier, 1919. Vol. 522, article id 119585
Keywords [en]
Oxynitride glasses Beryllium-silicate glasses Raman spectroscopy Thermal properties
National Category
Materials Engineering Ceramics
Research subject
Technology (byts ev till Engineering), Glass Technology
Identifiers
URN: urn:nbn:se:lnu:diva-88616DOI: 10.1016/j.jnoncrysol.2019.119585OAI: oai:DiVA.org:lnu-88616DiVA, id: diva2:1345911
Funder
The Crafoord Foundation, 20160900ÅForsk (Ångpanneföreningen's Foundation for Research and Development), 2015-04809Knowledge Foundation, 68110029Available from: 2019-08-26 Created: 2019-08-26 Last updated: 2019-09-04Bibliographically approved

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Wójcik, Natalia A.Jonson, BoMöncke, DorisAli, Sharafat

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