Chemical reactions and phase equilibria in BaB2 O4 -MF (M = Li, N, or K) systems
Chemical processes and phase equilibria in BaB2O4-MF (M = Li, Na, or K) systems were studied. Liquidus curves for these sections were constructed. The primary crystallization field of the low-temperature barium borate phase (β-BaB2O4) for the BaB2O4-(LiF)2 system was found to lie in the range 65-50 mol % BaB2O4; for the BaB2O4-NaF system, in the range 70-52.5 mol % BaB2O4; and for the BaB2O4-KF system, 65-50 mol % BaB2O4.