ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Phase Diagram of the System KCl—KBF₄—K₂TiF₆

M. Chrenková, O. Patarák, and V. Daněk

Institute of inorganic Chemistry, Slovak Academy of Sciences, SK-842 36 Bratislava

Abstract: The phase diagram of the ternary system KF-KBF₄-K₂TiF₆ was determined using the thermal analysis method. The subsequent coupled analysis of the thermodynamic and phase equilibrium data was performed to obtain thermodynamically consistent phase diagram. In the system KCl-KBF₄-K₂TiF₆ the intermediate compound K₃TiF₆Cl is formed. The K₃TiF₆Cl-KBF₄ joint divides the ternary system into two simple eutectic systems. The calculated coordinates of the two ternary eutectic points are as follows: e₁: 24.1 mole % KCl, 62.1 mole % KBF₄,13.8 mole % K₂TiF₆, θ_e1 = 447.1°C e₂: 6.5 mole % KCl, 62.5 mole % KBF₄,31.0 mole % K₂TiF₆, θ_e2 = 414.5°C. The standard deviation of the temperature of primary crystallization in the calculated ternary phase diagram is +/-17.1° C.

Full paper in Portable Document Format: 494a167.pdf

Chemical Papers 49 (4) 167–172 (1995)