Influence of Vanadium on Optical and Mechanical Properties of Aluminosilicate Glasses

Cicconi MR, Lu Z, Uesbeck T, Van Wuellen L, Brauer DS, de Ligny D (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Frontiers in Materials Frontiers Media

Book Volume: 7

DOI: 10.3389/fmats.2020.00161

Abstract

V2O5 was introduced up to 9 wt.% in a peralkaline alkaline earth aluminosilicate glass and up to 4.8 wt.% in two sodo aluminosilicate glasses, respectively, a peralkaline and a peraluminous one. This introduction had a strong effect on thermal properties, and in particular, on glass transition and crystallization temperatures of the peraluminous glass, which dropped by 89 K, while a moderate drop of similar to 20 K was observed for the two other glasses. Still, the glass stability and the glass-forming ability stayed almost unmodified. The elastic properties measured by Brillouin spectroscopy show a decrease with added Vanadium for the depolymerized alkali earth aluminosilicate and the peraluminous sodo aluminosilicate. In contrast, the elastic properties remained unchanged for the peralkaline composition. Using optical absorption, the proportion of V5+, which is largely dominant, was found to follow the trend predicted using optical basicity considerations. A large photoluminescence emission, centered at similar to 560 nm, was found for all glasses, upon excitation in the UV edge at both similar to 280 and similar to 350 nm. The emission band positions were relatively insensitive to the glass composition, whereas their intensities show variations of one order of magnitude between the sodium peralkaline composition and the calcium depolymerized glass. A too-high concentration of V(2)O(5)shows a quenching effect on the emission. Polarized and cross-polarized Raman spectroscopy allowed us to identify the different environments around the V5+O4 tetrahedra. The highly polarizable V5+O4 tetrahedra associated with two non-bridging oxygens, vibrating at 860 cm(-1), is proposed to be responsible for the more efficient charge transfer. At the opposite end, the formation of VO4-AlO4 units is proposed to quench luminescence properties. Furthermore, we observed that, upon thermal treatment, the optical properties of the glasses are significantly modified without observable structural modifications or evolution of the elastic properties.

Authors with CRIS profile

Maria Rita Cicconi Lehrstuhl für Glas und Keramik Tobias Uesbeck Lehrstuhl für Glas und Keramik Dominique de Ligny Professur für Werkstoffwissenschaften (Glas und Keramik)

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE) Universität Augsburg DE Germany (DE)

How to cite

APA:

Cicconi, M.R., Lu, Z., Uesbeck, T., Van Wuellen, L., Brauer, D.S., & de Ligny, D. (2020). Influence of Vanadium on Optical and Mechanical Properties of Aluminosilicate Glasses. Frontiers in Materials, 7. https://dx.doi.org/10.3389/fmats.2020.00161

MLA:

Cicconi, Maria Rita, et al. "Influence of Vanadium on Optical and Mechanical Properties of Aluminosilicate Glasses." Frontiers in Materials 7 (2020).

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