ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Evaluation of Surface Tension of Molten Ionic Mixtures
Toshihiro TanakaTomoko KitamuraIda Annika Back
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2006 Volume 46 Issue 3 Pages 400-406


A thermodynamic model was derived to evaluate the surface tension of molten ionic mixtures by considering the ratio of the radius of cation to that of anion. The present model reproduces the following characteristics of the composition dependence of surface tension in molten alkaline–halide ionic mixtures precisely.
• almost linear change with the composition in common cation systems:
• large concave feature of the composition dependence in common anion systems.
The present model can be applied to evaluate the surface tension molten ionic mixtures with complex anion such as sulfate as well as molten SiO2 based binary systems considering effective ionic radii for complex anions.

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© 2006 by The Iron and Steel Institute of Japan
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