Essential Magnesium Alloys Binary Phase Diagrams and Their Thermochemical Data

Table 11

Optimized model parameters of the Mg-Ca system [41].

Phase	Parameters; Δ𝑔^0 and ^0𝐿 in J/mole, ^oΔ𝐻 in J/mole·atom and ^oΔ𝑆 in J/mole·atom·K
Liquid	Z^MgMgCa=5, Z^CaCaMg=4; Δ𝑔^0MgCa= −13 206.20 + 9.37𝑇; Δ𝑔^10MgCa= 6918.14 − 21.03𝑇; Δ𝑔^01MgCa= 8911.57 − 15.11
Mg-hcp	^0𝐿^Mg-hcp=7153.98−9.41𝑇
Mg2Ca	^oΔ𝐻^Mg2CaMg,Ca = −13 468.63; ^oΔ𝑆^Mg2CaMg,Ca = −1.93