Formation and properties of glasses in the system of BaCl2-Bi2O3-TeO2

Abstract

Glass formation in BaCl2-Bi2O3-TeO2 was investigated by melting of starting mixtures in open silica tubes in flame. Chemically pure (purity 3N+) BaCl2, Bi2O3 and TeO2 were used as starting compounds. Large glass forming area is located near TeO2-rich corner of the ternary diagram and reaches up to 30 BaCl2 – 30 BiO3/2 – 40 TeO2 composition. Bulk samples were obtained by pouring the melt in brass mold; the solidified glasses were annealed at the temperature near their glass transition temperature (Tg) and then slowly cooled down to room temperature.