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Calculation of the P and as activity coefficients in in–p and in–as mixtures with the regular solution approaches and lattice models
Author(s) -
Kühn G.,
Sühnel K.,
Rentsch H.
Publication year - 1982
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170170202
Subject(s) - liquidus , regular solution , thermodynamics , lattice (music) , chemistry , activity coefficient , solid solution , mathematics , physics , aqueous solution , phase (matter) , organic chemistry , acoustics
The activity coefficients of P and As in the mixtures of In–P and In–As are calculated along the liquidus curve in the concentration ranges 0.014 ≦ x P ≦ 0.45 and 0.019 ≦ x As ≦ 0.87 using different versions of the regular solution theory and the lattice models of B ARKER and T OMPA . – It is shown that the Simple Solution, the Subregular Solution, and the model of B ARKER with temperature‐dependent interaction parameters give a satisfactory description of the experimental variation of the activity coefficients and liquidus temperatures for both systems.