Vitrification in the BaO–B2O3–Al2O3–TiO2 system containing small admixtures of PbO

Effect of TiO2 on thermal, structural and third-order nonlinear optical properties of Ca–La–B–O glass system

“…Abdel-Baki et al [18] have observed a similar effect of TiO 2 in silicate glasses. Generally, in most of the oxide glasses with an addition of any particular oxide into the glass structure, density follows the same trend as that of T g [19,20]. However, the reverse trend is also observed in few glasses where glass transition temperature decreased with the increase in glass density [21].…”

Chemical composition, structure and properties of glass and glass-ceramic materials in the system of BaO (PbO)- B2O3 - Al2O3 -TiO2

“…In the second group, increased [ AliO 3 ] reduced the chemical durability, especially for the glass compositions characterized with spinodal liquid phase separation. Taking into account that, in accordance with [ 11], the secondary glassy phase is characterized with high [B 2 O 3 ], it is possible to assume that this vitreous phase has lower chemical resistance.…”

Review: The Use of Microwave Irradiation in the Processing of Glasses and Their Composites

“…Glass-ceramic materials are generally prepared via conventional heating methods. − In addition, some studies on their MW sintering have been reported. Thus, polymer-net gel process for preparing ultrafine powder of Li−Al−Si glass-ceramics was described, starting from tetraethylorthosilicate, with lithium and aluminum salts as precursors, comprising a series of steps, including drying the wet gel at 120 °C for 12 h or in a microwave oven for 15−30 min to get dried gel before calcination at 600−1200 °C to obtain an ultrafine powder of Li−Al−Si glass-ceramics.…”