INVESTIGATION OF POLYTHERMAL CUTS (Bi2S3)0.825(Pr2S3)0.175–(Bi2S3)0.85(Pr2O3)0.15 AND (Pr2S3)0.80(Pr2O3)0.20–Bi2S3 OF Pr2S3–Bi2S3–Pr2O3 TERNARY SYSTEM

F.M.Mammadov, A.V.Nematova, I.B.Bakhtiyarly

(Bi₂S₃)_0.825(Pr₂S₃)_0.175–(Bi₂S₃)_0.85(Pr₂O₃)_0.15 and (Pr₂S₃)_0.80(Pr₂O₃)_0.20–Bi₂S₃ polythermal cuts of Pr₂S₃–Bi₂S₃–Pr₂O₃ ternary system were studied by physical-chemical complex methods, state diagrams of bofh cuts were drawn, the boundaries of region of primary crystallization and coordinates of non- and monovariant equilibria of fernary system Pr₂S–Bi₂S₃–Pr₂O₃were determined.

Keywords : phase diagram, eutectic, liquidus, luminophores, oxysulfide

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