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Original Articles

Essai d'Interprétation des Diagrammes Binaires de Cristaux Plastiques

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Pages 61-75 | Received 30 Jun 1986, Published online: 13 Dec 2006
 

Abstract

Un certain nombre de diagrammes binaires de cristaux plastiques comportent un fuseau d'équilibre à plusieurs extremums. Un développement de l'enthalpie d'excés est proposé; ses coefficients peuvent étre discutés algébriquement dans le cas de deux enantiomeres. Ala lumière de cette discussion sont examines quelques modeles de solutions binaires. Enfin des valeurs numériques des coefficients sont proposees pour rendre compte de plusieurs diagrammes expérimentaux.

[Some binary diagrams of plastic crystals have an equilibrium spindle with several extremums. To account for this fact, an expansion of the excess enthalpy is proposed; its coefficients can be algebraicly discussed in the case of two optical isomers. Some models of binary solutions are confronted with this discussion. Numerical values for the coefficients are proposed to account for several experimental diagrams.]

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