Thermodynamic description for concentrated metallic solutions using interaction parameters
- Cite this article as:
- MA, Z. Metall and Materi Trans B (2001) 32: 87. doi:10.1007/s11663-001-0011-0
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The integral molar excess Gibbs energy of a multicomponent system is expressed in terms of interaction parameters, from which the analytical formulae of the activity coefficients of the solutes and solvent, as Eqs.  and , were deduced. This approach, named the ε approach, is able to describe quantitatively the thermodynamic properties of multicomponent systems. It features thermodynamic consistency, high accuracy, and a rather small influence of the higher-interaction parameters on the thermodynamic properties of metallic solutions. A simple modification to the first-order interaction parameters extends the ε approach, to be applicable to systems with strong interactions between components at both low and concentrated levels.