Study of phase equilibria and boundary elements in the KBr-KVO3-K2MoO4 ternary system

By differential thermal analysis, the coordinates of the following characteristic points in the KBr-KVO₃-K₂MoO₄ system were determined: a eutectic in the KBr-KVO₃ system (12% KBr, 88% KVO₃, T _melt = 458°C), a eutectic in the KBr-KVO₃-K₂MoO₄ ternary system (12.8% KBr, 84.7% KVO₃, 2.5% K₂MoO₄,T _melt = 430°C), and also three points of polymorphic transitions in K₂MoO₄ ((1) δ ? γ: 21.7% KBr, 72.3% KVO₃, 6% K₂MoO₄,T _melt = 476°C; (2) γ ? β: 19% KBr, 78% KVO₃, 3% K₂MoO₄,T _melt = 450°C; and (3) γ ? β: 6% KBr, 89% KVO₃, 5% K₂MoO₄,T _melt = 450°C). For elements of the ternary system, phase equilibria were described.