A. A. Manyakova, E. M. Egorova, I. K. Garkushin.
ABSTRACT:
A stable triangle of the four-component mutual system Li, Na, Cs || F, I was studied by differential thermal analysis. The maximum crystallization field belongs to the most refractory component, lithium fluoride. In the field of lithium fluoride from the side of lithium fluoride and cesium iodide, the region of delamination in the liquid phase is marked. Mono- and non-invariant equilibrium states and coordinates of the triple eutectic were identified: melting point 433 °C, composition‑0.25 mole % LiF + 45.89 mole % NaI + 53.86 mole % CsI.
KEY WORDS:
phase equilibria, DTA method, stable triangle, melting point, alloy, eutectic.