Inorganic Materials, vol.48, no.2, pp.106-113, 2012 (SCI-Expanded, Scopus)
We have studied phase equilibria in the pseudoternary system Ag 2Se-As 2Se 3-Bi 2Se 3 and constructed the 300-, 600-, and 800-K isothermal sections, a number of partial phase diagrams, and the liquidus projection of this system. The AgAsSe 2-AgBiSe 2 and As 2Se 3-AgBiSe 2 joins are shown to be pseudobinary, and the Ag 3AsSe 3-AgBiSe 2 and AgAs 3Se 5-AgAsSe 2 joins are pseudobinary below the liquidus. Several in- and univariant peritectic, eutectic, and eutectoid equilibria and a broad region of AgBiSe 2-based solid solutions are identified. The homogeneity region of the AgBiSe 2-based phase has the largest extent along the AgAsSe 2-AgBiSe 2 join: 40 mol % (650 K) for the high-temperature form of AgBiSe 2 and 20 mol % (300 K) for its low-temperature form. © 2012 Pleiades Publishing, Ltd.