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TitreAn outline of phase equilibrium
TéléchargerTéléchargements
AuteurFroese, E
SourceCommission géologique du Canada, Dossier public 7057, 2013, 12 pages, https://doi.org/10.4095/292552
Année2013
ÉditeurRessources naturelles Canada
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.4095/292552
Mediaen ligne; numérique
Référence reliéeCette publication est reliée Froese, E; (2006). An outline of reaction equilibrium, Commission géologique du Canada, Recherches en cours (En ligne) no. 2006-H2
Formatspdf
Sujetséquilibre; équilibres de phases; analyse chimique; processus chimique; thermodynamique; énergie; temperature; conditions de pression-température; géochimie
Illustrationsgraphs; plots; ternary diagrams
Consultation
Endroit
 
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
 
ProgrammeDeveloppements methodologie, Initiative géoscientifique ciblée (IGC-4)
Diffusé2013 04 30
Résumé(disponible en anglais seulement)
A collection of systems of different composition defines a composition space which can be described by components defined as the minimum number of combinations of elements in fixed proportion required to express the composition of all phases in the considered systems. At stable equilibrium, and at constant pressure and temperature, each system is characterized by a minimum Gibbs energy G. In the space defined by the components n, there exists a minimum surface. If the compositional variation from system to system is continuous, the change of G along the minimum surface can be described in differential form by (formula) where ñi refers to components other ni. Designating the partial molar Gibbs energy of a component as G, and integrating the expression gives (formula) and division by ni leads to (formula) where G is the molar Gibbs energy and X is the mole fraction of a component. A projection of the minimum molar G surface onto the composition base, in terms of X, results in a phase diagram. 3
GEOSCAN ID292552