Effect of glass composition on activation energy of viscosity in glass-melting-temperature range

Journal Article · Wed Aug 01 00:00:00 EDT 2012 · Journal of Non-Crystalline Solids

DOI:https://doi.org/10.1016/j.jnoncrysol.2012.05.030· OSTI ID:1050792

Hrma, Pavel R; Han, Sang Soo

In the high-temperature range, where the viscosity (Eta) of molten glass is <10{sup 3} Pa s, the activation energy (B) is virtually ln(Eta) = A + B/T, is nearly independent of melt composition. Hence, the viscosity-composition relationship for Eta < 10{sup 3} Pa s is defined by B as a function of composition. Using a database encompassing over 1300 compositions of high-level waste glasses with nearly 7000 viscosity data, we developed mathematical models for B(x), where x is the composition vector in terms of mass fractions of components. In this paper, we present 13 versions of B(x) as first- and second-order polynomials with coefficients for 15 to 39 components, including Others, a component that sums constituents having little effect on viscosity.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1050792
• Report Number(s): PNNL-SA-85624; JNCSBJ; 830403000; TRN: US1204846
• Journal Information: Journal of Non-Crystalline Solids, Vol. 358, Issue 15; ISSN 0022-3093
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ACTIVATION ENERGY
GLASS
MATHEMATICAL MODELS
POLYNOMIALS
TEMPERATURE RANGE 0400-1000 K
VECTORS
VISCOSITY
WASTES
glass viscosity
nuclear waste glass
viscosity-composition relationship
activation energy
mixture models