Phase Equilibria in the NaFLiFLaF₃ System

R. N. Savchuk^a, N. V. Faidyuk^a, A. A. Omel’chuk^a, V. I. Lutsyk^b, and A. E. Zelenaya^b

^a Vernadskii Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine,
pr. akademika Palladina 32/34, Kiev, 03680 Ukraine

^b Institute of Physical Materials Science, Siberian Branch, Russian Academy of Sciences,
ul. Sakh’yanovoi 8, Ulan-Ude, 670047 Russia

e-mail: savchuk@ionc.kiev.ua

Received May 2, 2012

Abstract—The NaF–LiF–LaF₃ system was studied by differential thermal and X-ray powder diffraction anal-
yses. In the system, there are two ternary invariant points, a eutectic (580 2C, 44.0 mol % NaF, 42.0mol %
LiF, 14.0 mol % LaF₃), and a peritectic (595 2C, 45.0 mol % NaF, 39.0 mol % LiF, 16.0 mol % LaF₃). The ternary
peritectic point results from the intersection of the crystallization fields of LiF, LaF₃, and NaLaF₄.

DOI: 10.1134/S0036023614060175

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