Properties and structures of tin borophosphate glasses

The Effects of Fe<sub>2</sub>O<sub>3</sub> and B<sub>2</sub>O<sub>3</sub> on the Glass Structural, Thermal, <i>in Vitro</i> Degradation Properties of Phosphate Based Glasses

“…Sharmin et al [26] developed several borophosphate based glass compositions and reported that the glass transition temperature was increased whilst the degradation rate was reduced significantly with addition of B 2 O 3 into the glass network. It was confirmed, and also reported by Lim et al, [27] that the formation of covalent B-O-P bonding produced a stronger, better chemically resistant glass network with higher packing density and lower crystallisation tendency.…”

Zero photoelastic and water durable ZnO–SnO–P2O5–B2O3 glasses

“…At the weight loss per unit area in x = 19, y = 3 and x = 20.5, y = 10, samples are at least in 2 and 3 orders lower than that in series of y = 0, respectively. These durable properties by B 2 O 3 substitution have been reported in SnO-P 2 O 5 -B 2 O 3 glasses, 11,12 which were explained by making a protection coating film against water molecular attack. 12 And the normalized weight loss on the SF57 glass is more than 1.5 × 10 −10 kg/mm 2 per hour in 50 • C water, 16 which is about 4 times higher than the zero photoelastic glasses.…”

Properties and structure of binary tin phosphate glasses

“…The chemical durability of these glasses is relatively poor but can be improved by compositional modifications. For example, chemically durable stannous borophosphate compositions with refractive indicesN 1.78 and glass transition temperaturesb 300°C were recently described [7].…”