Wj. Howell et al., APPLICATION OF THE LCPT MODEL TO SOLID-LIQUID EQUILIBRIA FOR BINARY COMPOUND-FORMING ALLOYS, AIChE journal, 39(9), 1993, pp. 1519-1526
The linear chemical-physical theory (LCPT) model for liquid metal solu
tion thermodynamics has been extended to the determination of the liqu
idus curves for binary intermetallic compound-forming systems. The equ
ations developed include corrections to the observed melting point tem
perature and heat of fusion for compounds that dissociate partially on
melting. The primary advantages of the LCPT model for solid-liquid eq
uilibria are the small number of physically realistic parameters requi
red, ease of implementation, and wide applicability. In addition, the
model also permits the incorporation of compounds in modeling the liqu
idus curves that are not necessary for representing the liquid-phase t
hermodynamic properties. For the seven systems studied, the agreement
between calculated and experimentally measured liquidus curves is quit
e good.