Abstract
The steady state viscosity of a tellurite glass with composition 75TeO 2–20ZnO–5Na 2O has been measured using parallel plate rheometry and found to decrease with shear rate and temperature. The viscosity is constant for lower shear rates but decreases rapidly above a critical rate γ̇ c, due to shear thinning. The shear rate dependence of the viscosity is found to be well approximated by the Cross model in the temperature range between 609 and 663 K while the temperature dependencies of both the viscosity and relaxation time are observed to follow an Arrhenius law in this temperature range. The activation energy obtained from the Arrhenius fit is used to determine the fragility of the tellurite glass, which is compared to that of other well-known glasses from the literature.
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
