Elastic properties and spectroscopic studies of Na2O�?�ZnO�?�B2O3 glass system

[摘要] Elastic properties, ¹¹B MASâ€�?�NMR and IR spectroscopic studies have been employed to study the structure of Na₂Oâ€�?�ZnOâ€�?�B₂O₃ glasses. Sound velocities and elastic moduli such as longitudinal, Young’s, bulk and shear modulus have been measured at a frequency of 10 MHz as a function of ZnO concentration. Both sound velocities and elastic moduli increase with increasing ZnO concentration. Poisson’s ratio and Debye temperature were also found to increase with ZnO concentration. ¹¹B MASâ€�?�NMR and IR spectra show characteristic features of borate network and compositional dependence trends as a function of Na₂O/ZnO concentration. The results are discussed in view of borate network and dual structural role of Zn²⁺ ion into the network. The results indicate that the Zn²⁺ ions are likely to occupy network forming positions in this glass system.

[学科分类] 材料工程

[关键词] Borate glasses;elastic properties;MASâ€�?�NMR;IR;network former.