Thermodynamic constraints along isograms in ternary systems: application to three-phase equilibria

Thermodynamic Properties of LaCrO4, La2CrO6, and La2Cr3O12, and Subsolidus Phase Relations in the System Lanthanum–Chromium–Oxygen

“…This composition constraint reduces one degree of freedom. The oxygen potential defined by the equilibrium between the LaCrO 3 and LaCrO 4 will prevail in the adjoining three‐phase fields containing these two phases …”

Gibbs Energy of Formation of Ca3Ti8Al12O37 and Phase Relations and Chemical Potentials in the System Al2O3-TiO2-CaO

“…[28] The chemical potentials of the apex component (such as CaO) should increase when different phase fields are traversed along any line joining a composition on the opposite binary (Al 2 O 3 -TiO 2 in this example) to the apex (Kohler isogram; X Al 2 O 3 =X TiO 2 ¼ constant). Figure 5 shows the relative chemical potential of CaO as a function of temperature for various phase fields depicted in Fig.…”

Estimation of oxygen potential for U–Pu–O mixed oxide fuel

“…The choice of a = 2 and c = 8 provides reasonable estimates for MOX Nomograph of oxygen potential for hypo-stoichiometric MOX fuel. 1 Colinet isogram is a pseudo-binary line connecting two constituent binary systems in a ternary phase diagram such that the mole fraction of the common component present in both the binaries remains constant [12]. 2 Kohler isogram is a pseudo-binary line connecting one apex of the Gibbs triangle to the opposite binary system.…”

“…2 Kohler isogram is a pseudo-binary line connecting one apex of the Gibbs triangle to the opposite binary system. Along a Kohler isogram, originating from UO 2 apex, the ratio of the components on the baseline binary, N ð1=aÞPua Ob =N PuO2 , remains constant [12].…”

“…Nomograph of oxygen potential for hypo-stoichiometric MOX fuel [12,13]. These lines represent constant valency for plutonium [4].…”