Journal ArticleDOI
The modified quasi-chemical model: Part II. Multicomponent solutions
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TLDR
In this article, the modified quasi-chemical model in the pair approximation for short-range ordering (SRO) in liquids is extended to multicomponent solutions and an improved general functional form for "ternary terms" in the excess Gibbs energy expression is proposed, related to the effect of a third component upon the binary pair interaction energies.Abstract:
Further improvements to the modified quasi-chemical model in the pair approximation for shortrange ordering (SRO) in liquids are extended to multicomponent solutions. The energy of pair formation may be expanded in terms of the pair fractions or in terms of the component fractions, and coordination numbers are permitted to vary with composition. The model permits complete freedom of choice to treat any ternary subsystem with a symmetric or an asymmetric model. An improved general functional form for “ternary terms” in the excess Gibbs energy expression is proposed. These terms are related to the effect of a third component upon the binary pair interaction energies. It is shown how binary subsystems that have been optimized with the quasi-chemical model can be combined in the same multicomponent Gibbs energy equation with binary subsystems that have been optimized with a random-mixing Bragg-Williams model and a polynomial expression for the excess Gibbs energy. This is of much practical importance in the development of large databases for multicomponent solutions. The model also applies to SRO in solid solutions as a special case, when the number of lattice sites and coordination numbers are constant.read more
Citations
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Journal ArticleDOI
FactSage thermochemical software and databases, 2010–2016
Christopher W. Bale,Eve Bélisle,Patrice Chartrand,Sergei A. Decterov,Gunnar Eriksson,Aïmen E. Gheribi,Klaus Hack,In-Ho Jung,Youn-Bae Kang,J. Melancon,Arthur D. Pelton,Stephan Petersen,Christian Robelin,J. Sangster,P.J. Spencer,M-A. Van Ende +15 more
TL;DR: The FactSage computer package as discussed by the authors consists of a series of information, calculation and manipulation modules that enable one to access and manipulate compound and solution databases and perform a wide variety of thermochemical calculations and generate tables, graphs and figures of interest.
Journal ArticleDOI
First-Principles Calculations and CALPHAD Modeling of Thermodynamics
TL;DR: In this paper, the basics of the CALPHAD modeling and first-principles calculations are presented emphasizing current multiscale and multicomponent capability, with examples on enthalpy of formation at 0-K, thermodynamics at finite temperatures, enthpy of mixing in binary and ternary substitutional solutions, defect structure and lattice preference, and structure of liquid, super-cooled liquid, and glass.
Journal ArticleDOI
Reprint of: FactSage thermochemical software and databases, 2010–2016
Christopher W. Bale,Eve Bélisle,Patrice Chartrand,Sergei A. Decterov,Gunnar Eriksson,Aïmen E. Gheribi,Klaus Hack,In-Ho Jung,Youn-Bae Kang,J. Melancon,Arthur D. Pelton,Stephan Petersen,Christian Robelin,J. Sangster,P.J. Spencer,M-A. Van Ende +15 more
TL;DR: A summary of the developments in the FactSage thermochemical software and databases during the last six years is presented, with particular emphasis on the new databases and developments in calculating and manipulating phase diagrams.
Journal ArticleDOI
The modified quasi-chemical model: Part IV. Two-sublattice quadruplet approximation
TL;DR: In this article, the modified quasi-chemical model is further extended, in the quadruplet approximation, to treat, simultaneously, first-nearest-neighbor (FNN) and second-NEIGHbor (SNN) short-range ordering (SRO) in solutions with two sublattices.
Journal ArticleDOI
Corrosion in the molten fluoride and chloride salts and materials development for nuclear applications
TL;DR: In this paper, a comprehensive approach covering all relevant work in the field of corrosion data accumulated since the 1950s to date, major corrosion problems and corresponding mechanisms, metallurgical factors, historical development of corrosion resistant alloys and recent attempts are also reviewed.
References
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Journal ArticleDOI
The Modified Quasichemical Model I— Binary Solutions
TL;DR: In this article, a modified quasichemical model for short-range ordering in liquid and solid solutions is presented, where the energy of pair formation is expanded in terms of the pair fractions rather than the component fractions, and coordination numbers are permitted to vary with composition.
Journal ArticleDOI
Zur Berechnung der thermodynamischen Daten eines ternren Systems aus den zugehrigen binren Systemen: Kurze Mitteilung
Journal ArticleDOI
Thermodynamic analysis of ordered liquid solutions by a modified quasichemical approach—Application to silicate slags
Arthur D. Pelton,Milton Blander +1 more
TL;DR: In this paper, a semi-empirical model for the analysis of the thermodynamic properties of ordered liquid solutions such as slags has been developed, which are based upon modifications of the quasichemical theory, taking into account the concentration and temperature dependence of the solution properties of order systems and thus enhance the reliability of interpolations and extrapolations of data.
Journal ArticleDOI
Thermodynamic analysis of binary liquid silicates and prediction of ternary solution properties by modified quasichemical equations
Milton Blander,Arthur D. Pelton +1 more
TL;DR: In this paper, modified quasichemical equations were developed for the analysis of the thermodynamic properties of structurally ordered liquid solutions, which are well suited for use with molten silicates.
Journal ArticleDOI
Zur Berechnung der thermodynamischen Daten eines ternären Systems aus den zugehörigen binären Systemen
Friedrich Kohler,G. H. Findenegg +1 more
TL;DR: In this article, the Gultigkeitsbereich einer fruher1 angegebenen Methode zur Berechnung der thermodynamischen Daten von ternaren flussigen Mischungen von Nichtelektrolyten aus den Daten der zugehorigen binaren Systeme untersucht.