Structure, chemical durability, and mechanical properties of alkaline tungsten phosphates glasses

Abstract

Chloro-tungstate-phosphate glasses, LiCl–Li2WO4–P2O5, were synthesized using the melting-quenching route. The introduction impact of lithium chloride on the alkali tungstate phosphate network is investigated through the structural, chemical, and mechanical characteristics. The findings show that vitreous materials may be produced with lithium chloride contents below 30 mol%. It is also found that the addition of lithium chloride into the phosphate glass network affects the chemical durability of the glasses. Examination of the mechanical characteristics reveals that lithium chloride causes a decrease in the elastic constants of the glasses, including the longitudinal modulus (L), shear modulus (S), Young's modulus (E), bulk modulus (K), and Poisson coefficient. The bond strength approach is used to estimate and interpret the Vickers hardness values of the glasses. On the other hand, Infrared (IR) spectroscopy is performed to study their structural arrangement.