The reactivity of Zn3 V2 O8 towards ZnMoO4 was investigated by using DTA and XRD methods. A new compound of the formula Zn2.5 VMoO8 was found. It crystallises in an orthorhombic system. The melting temperature was determinated to be 8455C.
The phase relationship in the pseudobinary Co3V2O8-CoMoO4 system have been determined by differential thermal analysis (DTA) and X-ray diffraction (XRD). A new compound Co2.5 VMoO8, stable up to 1080±5°C has been found in the system. The results obtained are presented in the form of a phase diagram.
The phase equlibria established in the Zn3V2O8–ZnMoO4 system over the whole component concentration range up to 1000C have been investigated. A phase diagram has been constructed
using the results of DTA and XRD methods.
The phase diagram of CoV2O6–CoMoO4–CoO system in subsolidus area was investigated by DTA and XRD methods. It was shown that this area consisted of five subsidiary
systems in which there existed three solid phases. The melting temperatures of these systems were also determined.
The phase equilibria established in the system Al2 (MoO4 )3 –V2 O5 throughout the whole component concentration range up to 1000C were investigated by DTA and XRD methods. The results are
presented in the form of a phase diagram.
Differential thermal and phase X-ray analyses have shown that MoO3 and Fe2V4O13 form a solid substitution solution, in which Mo6+ ions are incorporate into the crystal lattice of Fe2V4O13 in place of V5+ ions. The solubility limit of MoO3 in Fe2V4O13 at ambient temperature is 18 mole % of MoO3. The phase equilibria in the system Fe2V4O13-FeVMoO7, were also studied. Results are presented in the form of a phase diagram.
DTA and XRD methods were applied in studies on phase equilibria established in the system V9Mo6O40-AlVMoO7 up to 1000C over the whole component concentration range. The results were presented in the form of a phase diagram.