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Prediction of surface tension in metallic and ionic melts in thermophysical database system
Author(s) -
Shi Dongpo,
Fang Xueliang,
Zhou Tuping,
Zhang Jiayun
Publication year - 1998
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199805574
Subject(s) - surface tension , mole fraction , thermodynamics , chemistry , gibbs free energy , gibbs isotherm , ionic bonding , physics , ion , organic chemistry
A so‐called excess surface tension model in a thermophysical database of IDMSKM system is described in this paper. The functional expression for excess Gibbs energy of mixing with mole fraction for binary solutions by Redlich & Kister has been applied to correlate excess surface tension defined in this paper with mole fraction for the same, therefore, the surface tension could be represented in a quaternary polynomial function of mole fraction. The predicted surface tension values by this model demonstrate a reasonable accuracy in binary metallic as well as ionic systems. The model exhibits a better generality than the previous ones for surface tension evaluations, hence its application could be expected to expand.