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Estimation of partial excess Gibbs energy of solutes in infinitely dilute liquid iron base binary alloys
Author(s) -
Tanaka Toshihiro,
Gokcen Nev A.,
Neuschütz Dieter,
Spencer Philip J.,
Morita Zenichiro
Publication year - 1991
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199101317
Subject(s) - thermodynamics , gibbs free energy , enthalpy , binary number , chemistry , mixing (physics) , entropy of mixing , regular solution , physics , mathematics , arithmetic , quantum mechanics
The partial excess Gibbs energy Δ Ḡ B Ex as well as the relationship between the partial enthalpy of mixing Δ H̄ B and the partial excess entropy of solution Δ S̄ B Ex of various solute elements in liquid Fe, Al and Pb binary alloys were evaluated from a new solution model, in which Δ S̄ B Ex can be calculated from the values of Δ H̄ B by Miedema's semi‐empirical method and some relevant physical properties of the components in the alloys. These calculated values of Δ Ḡ B Ex were found to be in reasonable agreement with the selected values presented so far. The present model gives the values of Δ Ḡ B Ex , for which the experimental data are not yet available.