Elastic Properties of Vanadium Doped Silica-Borotellurite Glasses

Abstract:

Silica borotellurite glasses doped with different molar fraction of V₂O₅ have been prepared by melt quenching technique. The elastic properties of {[(TeO₂)_0.7 (B₂O₃)_0.3]_0.8(SiO₂)_0.2}_(1-x)(V₂O₅)_x glasses are investigated using ultrasonic pulse echo measurements and their elastic properties have been characterized at room temperature. The density of the glasses was measured by Archimedes method using distilled water as buoyant liquid. The ultrasonic wave velocities (longitudinal, v_l and shear, v_S) were recorded at 5 MHz. Elastic moduli, Poisson’s ratio (σ) and microhardness (H) were then calculated to obtain quantitative analysis regarding the structure of these glasses. The results obtained showed that the doping of V₂O₅ with silica borotellurite enhances the strengthening of glass network. Glass with 0.03 molar fraction of V₂0₅ shows low ultrasonic velocities and low elastic moduli. The variation of elastic properties is related to the change of structure in the vanadium doped silica-borotellurite glass system.

• Periodical: Solid State Phenomena (Volume 307)
• Pages: 321-326
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.307.321
• Online since: July 2020
• Authors: Nurhayati Mohd Nor, Halimah Mohamed Kamari*, Amirah Abdul Latif, Nurisya Mohd Shah
• Keywords: Elastic Moduli, Poisson’s Ratio, Ultrasonic Velocities

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