The four-component system NaF–K
2WO
4–CaF
2–ВаF
2, a stable secant of the five-component reciprocal system Na,K,Ca,Ba//F,WO
4, has been studied for the first time by a combined use of physical-chemical analysis methods: differential thermal analysis (DTA), visual polythermal analysis (VPA) and projection thermography method (PTGM). Temperatures and coordinates of invariant points have been determined. The system crystallization tree is built by predicting phase equilibria using the translation method based on topological properties of geometrical images of the general and particular systems and their compatibility in one chart.
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