Glass Formation and Glass-Forming Ability of Melts in AIIO-B2O3 Binary Systems (AIIO = BeO, MgO, CaO, SrO, BaO, ZnO, CdO)

The data on the sizes of glass formation regions in the A^sup II^O-B^sub 2^O^sub 3^ binary systems (where A^sup II^ is a Group IIA or IIB element of the periodic table) and the possibility of calculating the glass-forming ability of simple oxides with the use of the Sun and Rawson criteria are analyzed. The disadvantages and limitations of these criteria are discussed. The modified Sun-Rawson criterion is described, and the glass-forming ability of melts in the A^sup II^O-B^sub 2^O^sub 3^ systems is calculated according to this criterion. The possibility of forming glasses in the BaO-B^sub 2^O^sub 3^, SrO-B^sub 2^O^sub 3^, and CdO-B^sub 2^O^sub 3^ systems is predicted in the composition regions for which data on the glass formation are not available.[PUBLICATION ABSTRACT]