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

 Thermodynamic proof of the existence of compounds in the phase diagrams of systems without solid solutions. II. The systems MF—AlF₃ (M = Li, Na, K)

J. Vrbenská and M. Malinovský

Department of Electrotechnology, Slovak Technical University, 880 19 Bratislava

Abstract: Application of the Le Chatelier-Shreder equation to the anal. of coordinates of the eutectic point on the liquidus curve of Li, Na, and K hexafluoroaluminate in the subsystems M₃AlF₃-AlF₃ was used to prove the presence of compds. LiAlF₄, NaAlF_4, and KAlF₄, resp., in these systems. Further, the existence of a chem. compd. in the system KF-AlF₃ in the compn. range 75-55 mol% KF is predicted. On the other hand, the possibility of the existence of compds. of the type Li₅Al₃F₁₄ or Li₃Al₂F₉ in the system LiF-AlF₃ was disproved.

Full paper in Portable Document Format: 356a747.pdf

Chemical Papers 35 (6) 747–756 (1981)