A Direct Method for the Derivation of Thermodynamic Excess Functions from <i>TX</i> Phase Diagrams

Brouwer, N.; Oonk, H. A. J.

doi:10.1524/zpch.1977.105.3_4.113

Zeitschrift Für Physikalische Chemie

1977

DOI: 10.1524/zpch.1977.105.3_4.113

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A Direct Method for the Derivation of Thermodynamic Excess Functions from TX Phase Diagrams

N. Brouwer¹,

H. A. J. Oonk²

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1980

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Cited by 9 publications

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Calculation of a Binary Solidus from the Liquidus and Minimal Additional Thermodynamic Information

Pelton

1980

Ber Bunsenges Phys Chem

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In a binary system, if the liquidus has been measured, if the thermodynamic properties of the liquid phase are known, and if the entropy of the solid phase is known or may be assumed to be ideal, then an exact thermodynamic calculation of the solidus as well as of the enthalpy of the solid can be made. The equations are derived and sample calculations are made for several systems. General relationships between binary phase diagrams and the thermodynamic properties of the phases are then developed. It is shown that a knowledge of any four of the following six quantities is sufficient to permit the other two to be calculated exactly: the solidus, the liquidus, enthalpy of the liquid, entropy of the liquid, enthalpy of the solid, entropy of the solid.In einem binaren System ist eine exakte thermodynamische Berechnung der Soliduskurve und der Enthalpie des Festkorpers moglich, wenn die Liquiduskurve gemessen wurde, wenn die thermodynamischen Eigenschaften der fliissigen Phase bekannt sind, und wenn die Entropie der festen Phase bekannt ist oder als ideal angenommen werden kann. Es werden die Gleichungen hergeleitet und fur einige Beispiele Berechnungeu durchgefiihrt. Danach werden generelle Beziehungen zwischen binaren Phasendiagrammen und den thermodynamischen Eigenschaften der Phasen entwickelt. Es wird gezeigt, daB die Kenntnis von jeweils vier der folgenden sechs GroBen ausreicht, um die beiden restlichen genau auszurechnen: Die Soliduskurve, die Liquiduskurve, die Enthalpie der Fliissigkeit, die Entropie der Flussigkeit, die Enthalpie des Festkorpers, die Entropie des Festkorpers.

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Calculation of a Binary Solidus from the Liquidus and Minimal Additional Thermodynamic Information

Pelton

1980

Ber Bunsenges Phys Chem

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Optimization of binary thermodynamic and phase diagram data

Bale

Pelton

1983

MTB

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Optimization of binary thermodynamic and phase diagram data

Bale

Pelton

1983

Metall Trans B

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A Direct Method for the Derivation of Thermodynamic Excess Functions from TX Phase Diagrams

Cited by 9 publications

References 4 publications

Calculation of a Binary Solidus from the Liquidus and Minimal Additional Thermodynamic Information

Calculation of a Binary Solidus from the Liquidus and Minimal Additional Thermodynamic Information

Optimization of binary thermodynamic and phase diagram data

Optimization of binary thermodynamic and phase diagram data

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