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Effect of V2O5 on structural and elastic properties of alkali silicate SiO2–Na2O–NaF glasses
Faculty
Science
Year:
2022
Type of Publication:
ZU Hosted
Pages:
121389
Authors:
Amin Abdelmoneim Sayed Ahmed eibrhim
Staff Zu Site
Abstract In Staff Site
Journal:
Journal of Non-Crystalline Solids ELSEVIER
Volume:
Keywords :
Effect , V2O5 , structural , elastic properties , alkali
Abstract:
A series of V2O5–doped alkali silicate SiO2–Na2O–NaF glasses were prepared by the melt quenching technique. Amorphousness of the samples was characterized using powder X-Ray diffraction (XRD) analysis; and the structural role of V2O5, Na2O and NaF in the silicate network was explored using Fourier Transform Infrared (FTIR) spectroscopy. Elastic properties, determined by using ultrasonic technique, were correlated with the compositional and structural parameters as well as the excess molar volume. The substitution of SiO2 by Na2O and NaF in the base SiO2–Na2O–NaF glass resulted in the breaking of Si–O–Si linkages and creation of NBOs, whereas the addition of V2O5 resulted in formation of VO5 structural units and weak V–O–V and Si–O–V linkages. Makishima-Mackenzie’s theory is valid for pure SiO2 and V2O5–free glasses. The discrepancy between theoretical and observed elastic moduli and micro-hardness of V2O5–doped glasses was discussed in details.
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Amin Abdelmoneim Sayed Ahmed eibrhim, "On the analysis and prediction of elastic properties in alkali Na2O-B2O3-V2O5 glasses under the substitution of V2O5 by Na2O", Society of Glass Technology, 2019
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Amin Abdelmoneim Sayed Ahmed eibrhim, "Elastic moduli and Poisson's ratio prediction in borate-based PbO-B2O3-V2O5 and Li2O-ZnO-B2O3 glass systems", ELSEVIER, 2019
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