Isothermal sintering with concurrent crystallization of polydispersed soda–lime–silica glass beads

Viscosity and glass transition temperature of hydrous float glass

“…Deviations between the viscosities of our melt containing 0.03 wt% of water and the data of [39] are within ±0.08 log units except for the viscosity measured at 851 K (deviation of ±0.18 log units). Agreement with Prado et al [14,15] is also well (Fig. 4).…”

“…4 presents a plot with the results of viscosity (expressed as logarithm of viscosity) versus water content (expressed as weight percent of H 2 O). The data of nominally dry melt were calculated from VFT parameters published in [14,15]. Although concentric cylinder experiments of Prado et al [14,15] and falling sphere experiments in our study were performed at different pressures (0.1 MPa and 200-500 MPa, respectively), the data are in very good agreement, implying that pressure has minor effect on the viscosity of float glass.…”

“…3(a) the viscosities of float glasses (ranging between 0.03 and 4.87 wt% H 2 O) measured at 200 MPa (this work) are compared with viscosities calculated at 0.1 MPa after [14,15,39]. Although denoted as soda-lime-silica glass, the samples used by Prado [14,15] are of similar chemical composition (differences of oxides content range between 0.5 wt% for SiO 2 Notes: The target temperature was reached using two ramps. In the case of FG7 and FG8 the ramps were of 30°C/min to 800°C and 100°C/min to the target T. For FG9, FG15 and FG16 the two ramps used were: 30°C/min to 800°C and 70°C/min to the target T. a Faxen correction is calculated as described in [17].…”

“…Viscosities of commercial or technical glasses (container, soda-lime-silica glass or float glass) at ambient pressure are well characterized both in the high viscosity and in the low viscosity range [10][11][12][13][14][15]. Most of the studies, however, do not yield information to which extent variations of total water content C w expressed in wt% (chemically dissolved as hydroxyl groups and physically dissolved as molecular water) can affect the melt viscosity.…”

Thermal behaviour of clays for traditional ceramics with soda–lime–silica waste glass admixture

“…17 Lath-shaped crystals were identified as wollastonite. [17][18][19] At 1000 • C devitrite crystals were not so extensively formed probably due to dissolution. For RC and WC, Fig.…”