The family of oxide glasses is very wide and it is continuously developing. The rapid development of advanced and innovative glasses is under progress. Oxide glasses have a variety of applications in articles for daily use as well as in advanced technological fields such as X-ray protection, fibre glasses, optical instruments and lab glassware. Oxide glasses basically consist of network formers, such as borate, silicate, phosphate, borosilicate, borophosphate, and network modifiers such as alkali, alkaline earth and transition metals.
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Dielectric properties of some oxide and oxynitride glasses - Durham e-Theses
The effect of boron oxide on the composition, structure, and adsorptivity of glass surfaces. The fact that simple borate glasses have rather high thermal expansion and low chemical durability attests to the unique influence of boron oxide additions upon the properties of silicate glasses. However, the impact of boron oxide additions upon surface properties of multicomponent borosilicates such as adsorption and reactivity is not yet well understood. In particular, the presence of multiple coordination states for boron is expected to introduce adsorption sites with different acidic or basic behavior, but their existence is yet unproven. To investigate these effects, multicomponent sodium aluminosilicate glasses have been prepared with varying sodium and boron concentrations and drawn into moderately high-surface-area continuous filament fibers. This structural information is combined with surface compositional information by X-ray Photoelectron Spectroscopy XPS to characterize the local atomic structure of boron at the as-formed glass surface.
Dielectric properties of some oxide and oxynitride glasses
Glass is a non- crystalline , often transparent amorphous solid , that has widespread practical, technological, and decorative use in, for example, window panes, tableware , and optics. Glass is most often formed by rapid cooling quenching of the molten form; some glasses such as volcanic glass are naturally occurring. The most familiar, and historically the oldest, types of manufactured glass are "silicate glasses" based on the chemical compound silica silicon dioxide, or quartz , the primary constituent of sand. The term glass , in popular usage, is often used to refer only to this type of material, although silica-free glasses often have desirable properties for applications in modern communications technology. Some objects, such as drinking glasses and eyeglasses , are so commonly made of silicate-based glass that they are simply called by the name of the material.