Effect of zinc on the physical properties of borate glasses

• Published in: Journal of non-crystalline solids 2012-08, Vol.358 (15), p.1746-1752
• Main Authors: El-Falaky, Ghada E., Guirguis, Osiris W.
• Format: Article
• Language: English
• Subjects: Bond compression model; Bonding; Borate glasses; Compressing; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Cross-link density; Density; Elastic properties; Elasticity, elastic constants; Exact sciences and technology; Glass; Glasses (including metallic glasses); Makishima–Mackenzie model; Materials science; Mathematical models; Mechanical and acoustical properties of condensed matter; Mechanical properties of solids; Modulus of elasticity; Physics; Specific materials; Zinc; Zinc oxide
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/j.jnoncrysol.2012.05.009

This manuscript presents a theoretical analysis of the elastic properties of ZnO−Na2O−Al2O3−B2O3 (in molar %) glass. The elastic moduli were calculated in terms of Makishima–Mackenzie theory and bond compression model. Addition effect of ZnO on the elastic moduli was investigated according to bond compression model in terms of the number of network bonds, the mean cross-link density, average stretching force constant, atomic ring size, and the ratio Kbc/Ke of the glass systems. Young's modulus, packing density and Poisson's ratio have been calculated and analyzed according to Makishima–Mackenzie model. The results indicate that the elastic moduli and the dimensionality of these glasses are sensitive to the increase in the zinc oxide content. ► Theoretical analysis of the elastic properties of ZnO–Na2O–Al2O3–B2O3. ► Theoretical bulk modulus Kbc increases with the increase of ZnO mol% content. ► Dimensionality of glass network is reduction with increase of ZnO mol% content. ► Dissociation energy increases with increase in the number of network bond nb. ► Calculated elastic moduli were in good agreement with those obtained experimentally.