Effect of the BaO addition on properties of alkali borosilicate glasses from sub-bituminous fly ash

BaO-doped silicate and borosilicate glasses for enhanced chemical durability: molecular dynamics simulations based strategy for glass design

“…Notably, the density of binary BaO–SiO 2 glasses was higher than Ba-NBS glasses, as expected from the lower density of raw material B 2 O 3 in Ba-NBS glasses. Our results of increasing glass density with BaO doping in sodium borosilicate glasses are in good agreement with the earlier studies of Rachniyom et al 55 Also, the increasing density of binary BaO–SiO 2 glasses with increasing BaO content has been reported by Rai et al 58 In addition, the similar trend of increasing glass density with BaO doping has been supported by the studies of Aboutaleb et al 56 for BaO–B 2 O 3 –Al 2 O 3 glass systems. Besides, in agreement to our results, the density reported by Rai et al 58 for binary BaO–SiO 2 glasses can be found to be considerably higher than densities reported by Rachniyom et al 55 for Ba-NBS glass and Aboutaleb et al 56 for B 2 O 3 -doped BaO–B 2 O 3 –Al 2 O 3 glasses.…”

“…Considering the numerous applications of BaO-doped silicate glasses, it is essential to explore the effect of BaO doping in these glasses. Though extensive research has been focused on the structural aspects of borosilicate glasses using MAS-NMR, IR, and Raman spectroscopic studies, 40–50 only few experimental 21,29,51–56 and simulation studies 57,58 have made pioneering contribution in the direction of BaO-doped glasses. Also, the available literature is quite scattered and further studies are needed to approach the appropriate conclusions.…”