Monika Bosacka

Unknown phase equilibria in the ternary oxide V2O5–CuO–In2O3 system in subsolidus area

The syntheses of two compounds Cu2In3VO9 and CuInVO5, forming in the ternary system V2O5–CuO–In2O3, are described. The compound CuInVO5 has been for the first time obtained as the pure phase. The temperatures and modes of melting of the compounds are determined, and their IR spectra are analysed. The phase diagram of V2O5–CuO–In2O3 system in subsolidus area is constructed by DTA and XRD methods. This system is shown to consist of 11 subsidiary subsystems in which three solid phases coexist at equilibrium. The melting temperatures of these subsystems are also determined.

The binary system PbO - BiVO4

Phase equilibria established in the PbO - BiVO4 system over the whole component concentration range up to 1000°C have been investigated. A phase diagram has been constructed using DTA and XRD.

The subsolidus area of CoO–In2O3–V2O5 system

The subsolidus phase relations of the ternary system CoO–In2O3–V2O5 were investigated by differential thermal analysis and X-ray diffraction techniques. It has been shown that the system consists of seven subsidiary systems in which three solid phases coexist in equilibrium. The melting temperatures of these subsystems have also been determined.