TY  - JOUR
AU  - Starodub, K.
AU  - Wu, G.
AU  - Yazhenskikh, E.
AU  - Müller, Michael
AU  - Khvan, A.
AU  - Kondratiev, A.
TI  - An Avramov-based Viscosity Model for the SiO2-Al2O3-Na2O-K2O System in a Wide Temperature Range
JO  - Ceramics international / Ci news
VL  - 45
IS  - 9
SN  - 0272-8842
CY  - Faenza
PB  - Ceramurgia73399
M1  - FZJ-2019-03663
SP  - 12169 - 12181
PY  - 2019
AB  - A modified Avramov equation is employed to describe the viscosity of silicate melts in the SiO2-Al2O3-Na2O-K2O system and its subsystems with associate species obtained from thermodynamic description and used as structural units. Two modifications to the Avramov equation are proposed: i) a stronger dependence of viscosity input of each structural unit on its concentration ii) the “fragility” parameter dependent on the melt composition at a given point. The model describes the viscosity reasonably well for most of the experimental data in the wide compositional range and in a temperature range from fully liquid to supercooled melts. Approaches to further improve the model are discussed.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000466253500132
DO  - DOI:10.1016/j.ceramint.2019.03.121
UR  - https://juser.fz-juelich.de/record/863657
ER  -