Thermodynamic modeling of the Ca–Ag binary system

Thermodynamic description of the Ag–(Ca, Li, Zn) and Ca–(In, Li) binary systems

“…The present calculated temperature (as 545°C) of eutectic reaction Liquid2Ag 2 Ca þAgCa is in a better agreement with the compiled experimental value of 548°C by Baren [38] in comparison with the calculated value of about 555°C from Huang et al [39]. The better fitting of liquidus curve with experimental data has been reached in the present work in compared with the previous work [31,39]. The peritectic reaction liquid þ AgCa2 Ag 3 Ca 5 has been corrected in the present, which was modeled as eutectic reaction liquid2Ag 3 Ca 5 þAgCa in the previous work [31,39].…”

“…As can be seen, an observable improvement has been made by the present optimization work. The present calculated temperature (as 545°C) of eutectic reaction Liquid2Ag 2 Ca þAgCa is in a better agreement with the compiled experimental value of 548°C by Baren [38] in comparison with the calculated value of about 555°C from Huang et al [39]. The better fitting of liquidus curve with experimental data has been reached in the present work in compared with the previous work [31,39].…”

“…For the present optimization work, in the composition range of 50-100 at% Ca, the experimental data reported by Pascal et al [29] and Campbell and Wood [30] were favored. The previously reported optimization results reported by Braga et al [31] and Huang et al [39] also are shown in Fig. 1.…”

“…No homogeneity solubility range was reported for the terminal solid solutions fcc (Ag), fcc(Ca) and bcc(Ca). Huang et al [39] and Braga et al [31] optimized this binary system using a Bragg-Williams random mixing model [40,41] for the liquid phase. However, the optimized invariant reactions are not all in agreement with the experimental data.…”

“…However, the optimized invariant reactions are not all in agreement with the experimental data. For example, the peritectic reaction liquid þAgCa2Ag 9 Ca 2 was shown as a eutectic reaction liquid2Ag 9 Ca 2 þAgCa in their work [31,39].…”