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Thermodynamic constraints along isograms in ternary systems: application to three-phase equilibria

Varamban, SV and Jacob, KT (1997) Thermodynamic constraints along isograms in ternary systems: application to three-phase equilibria. In: Materials Science and Engineering B, 49 (2). pp. 100-109.

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Official URL: http://dx.doi.org/10.1016/S0921-5107(97)00129-3


Thermodynamic constraints on component chemical potentials in three-phase fields introduced by the various isograms suggested in the literature are derived for a ternary system containing compounds. When compositions of two compounds lie on an isogram, it is associated with specific characteristics which can be used to obtain further understanding of the interplay of thermodynamic factors that determine phase equilibria. When two compounds are shared by adjacent three-phase fields, the constraints are dictated by binary compositions generated by the intersection of a line passing through the shared compounds with the sides of the ternary triangle. Generalized expressions for an arbitrary line through the triangle are presented. These are consistent with special relations obtained along Kohler, Colinet and Jacob isograms. Five axioms are introduced and proved. They provide valuable tools for checking consistency of thermodynamic measurements and for deriving thermodynamic properties from phase diagrams. (C) 1997 Elsevier Science S.A.

Item Type: Journal Article
Publication: Materials Science and Engineering B
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Thermodynamic constraints;Ternary systems;Isogram relations;Kohler isogram;Colinet isogram;Jacob isogram
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 22 Jun 2011 06:13
Last Modified: 22 Jun 2011 06:13
URI: http://eprints.iisc.ac.in/id/eprint/38544

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