Abstract
Viscosity and density of molten ZrF 4 -BaF 2 mixtures have been measured using the oscillating cup method and the Archimedean method respectively. The viscosity had a marginal minimum around the composition BaF 2 .2ZrF 4 , and increased significantly towards the composition BaF 2 .ZrF 4 . The density of molten ZrF 4 -BaF 2 increased with the BaF 2 content, while the volume thermal expansion decreased. The effect of the valence of the counter cation on the viscosity was studied by substitution of the glass modifier BaF 2 with NaF or LaF 3 . The viscosity increased with the valence of the counter cation. These fragile glass-forming systems are more comparable to ionic glasses than typical network glasses. The physical properties of the molten fluorides are discussed in relation to complex formation and the ionic character of the melts
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call