Phase equilibria in the cutting elements LiF–KCl–Li2WO4 and LiF–KCl–LiKWO4 of the quaternary reciprocal system Li, K‖F, Cl, WO4

• Published in: Russian journal of inorganic chemistry Vol. 62; no. 1; pp. 114 - 122
• Main Authors: Garkushin, I. K., Alekseev, V. A., Demina, M. A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2017; Springer Nature B.V
• Subjects: Chemistry; Chemistry and Materials Science; Crystallization; Cutting; Differential thermal analysis; Eutectic composition; Fluorides; Graph theory; Inorganic Chemistry; Lithium; Lithium fluoride; Melting points; Phase equilibria; Physicochemical Analysis of Inorganic Systems; Potassium chloride; Tungstates; X ray powder diffraction
• ISSN: 0036-0236; 1531-8613
• DOI: 10.1134/S0036023617010053

The quaternary reciprocal system comprising fluorides, chlorides, and tungstates of lithium and potassium was partitioned into simplexes using graph theory, and a phase tree of the system was constructed. In the cutting triangles LiF–KCl–Li
2
WO
4
and LiF–KCl–LiKWO
4
by differential thermal analysis, the melting points and compositions of ternary eutectics were determined, and the crystallization fields of phases are delineated. For each element of the state diagram, phase reactions were described. The compositions of crystallizing phases in the cutting triangles LiF–KCl–Li
2
WO
4
and LiF–KCl–LiKWO
4
were confirmed by X-ray powder diffraction analysis.