Journal Article

FZJ-2019-03663

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png An Avramov-based Viscosity Model for the SiO2-Al2O3-Na2O-K2O System in a Wide Temperature Range

Starodub, K. (Corresponding author) ; Wu, G.FZJ* ; Yazhenskikh, E.FZJ* ; Müller, M.FZJ* ; Khvan, A. ; Kondratiev, A.

2019
Ceramurgia73399 Faenza

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Please use a persistent id in citations: doi:10.1016/j.ceramint.2019.03.121

Abstract: 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.

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Contributing Institute(s):

1. Werkstoffstruktur und -eigenschaften (IEK-2)

Research Program(s):

1. 113 - Methods and Concepts for Material Development (POF3-113) (POF3-113)

Appears in the scientific report 2019

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Database coverage:
; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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