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Synthesis, structural characterization, and thermal properties of Ca‐ and La‐doped soda‐lime glasses by laser melting
Abstract
Laser melting techniques have been used in the preparation of unconventional glass compositions with high melting temperatures. Thus, we wanted to test the feasibility of using a CO2 laser in the preparation of nitrogen-rich oxynitride glasses and nitride silicate glasses. Melting from oxides and metallic raw materials, we wanted to study first glass formation and possible evaporation losses of the glass components. Two glass series were prepared and studied for their structure and thermal properties, one with Ca2+- and a higher melting La3+-doped soda-lime-silicate (SLS) series. In less than 3minutes of laser melting, spheres of up to 6mm diameter were successfully fabricated. The obtained glass samples were homogeneous and transparent in the visible region. X-ray diffraction and Raman spectroscopic analysis confirmed the amorphous nature of the synthesized samples. Sodium losses increase as calcium is added to the soda-lime-silicate glass. As expected, increasing Ca2+ or La3+ addition lead to increased depolymerization of the silicate network. Moreover, the increases in Tg with the addition of Ca2+ or La3+ ions indicating strengthening of the soda-lime-silicate glass by increasing strength of the M-O bonds of divalent and trivalent ions over monovalent sodium ions, weak Na-O bonds also resulting in significant evaporation loss during the short laser melting times. The thermal stability decreases upon addition of Ca2+ or La3+ ions to the soda-lime-silicate glasses.
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Authors (7)
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Sharafat Ali profesor
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Bo Jonson profesor
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Efstratios Kamitsos profesor
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Xinghua Li profesor
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Jian Luo
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Doris Möncke profesor
Cite as
Full text
- Publication version
- Accepted or Published Version
- License
- Copyright (2020 The American Ceramic Society and Wiley Periodicals, Inc)
Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
International Journal of Applied Glass Science
no. 11,
pages 699 - 706,
ISSN: 2041-1286 - Language:
- English
- Publication year:
- 2020
- Bibliographic description:
- Ali S., Wójcik N., Jonson B., Kamitsos E., Li X., Luo J., Möncke D.: Synthesis, structural characterization, and thermal properties of Ca‐ and La‐doped soda‐lime glasses by laser melting// International Journal of Applied Glass Science -Vol. 11,iss. 4 (2020), s.699-706
- DOI:
- Digital Object Identifier (open in new tab) 10.1111/ijag.15477
- Verified by:
- Gdańsk University of Technology
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