Thermodynamic assessment of LiCl–NdCl3 and LiCl–PrCl3 quasi-binary systems

Thermodynamic assessment of NdBr3 unary and LiBr–NdBr3 binary system

“…The modeling of the liquid phase was made in accordance to the structural information from several sources [17][18][19][20][21][22][23][24][25][26][27] postulating the existence of the LnX 6 3− complex in various lanthanide-alkali halide melts. The same approach has already been adopted in two previous papers [1,2]. The two sub-lattice ionic solution model [28] with NdBr 6 3− cluster including in the anion site, i.e., (Li + ) P : (Br − , NdBr 6 3− , NdBr 3 ) Q was adopted in the present work.…”

“…The present evaluated C S P expression from 298.15 K up to the melting point (T fus = 956 K) for solid NdBr 3 and C L P expression from the melting point up to 1300 K for liquid NdBr 3 were employed to obtain the c, d and e parameters in Eq. (1) for solid and liquid NdBr 3 , respectively, according to the procedure previously described in detail by Gong et al [1,2]. Slight adjustments to the previous C S P expression [3] were made so that the critically selected experimental data can be reproduced much better.…”

“…For many reasons, however, very few well determined or calculated phase diagrams as well as thermodynamic data have been reported up to now on molten salt systems. Our recent papers [1,2] gave some theoretical background to the CALPHAD method and described the applicability of the methodology to lanthanide halide-based molten salt systems. Following this systematic work, the present paper aims to validate experimental results from literature which, mainly concentrated on the liquid/solid equilibrium and thermodynamic properties of the LiBr-NdBr 3 system, and to provide a set of con- * Corresponding author.…”

Thermodynamic assessment of TbBr3 unary and NaBr–TbBr3 binary system

“…(1) for solid and liquid TbBr 3 , respectively. The procedure previously described in detail by Gong et al [62] is adopted in this way, but slight adjustments to the previous C S P expression are made so that the critically selected experimental data can be reproduced much better. f H 298 , S 298 , H T − H 298 , H fus and S fus associated with the melting of TbBr 3 [47][48][49][50][51] are used to evaluated the coefficients a and b in Eq.…”

The TbBr3–LiBr binary system: Experimental thermodynamic investigation and assessment of phase diagram

“…The CALPHAD technique has been extensively applied to industrial materials of many types, and yielded valuable information for a variety of practical applications. This technique has been applied to lanthanide-halide based systems and previous papers [13][14][15][16][17][18][19][20][21][22][23] reported the principles for the formal description in terms of ionic sublattice model and the results obtained for the thermodynamic assessment of these systems.…”