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Abstract  

The investigations of reaction between Ag2SO4 and Ag2S in air atmosphere have been carried. Results of DTA and X-ray phase powder diffraction of a reaction mixture have confirmed that in the Ag−O−S system exists a new phase. A formula of the phase is Ag2SO2.

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Abstract  

Phase equilibria being established in the subsolidus area of the V2O5−Cr2(MoO4)3 system at the whole component concentration range have been studied basing on DTA and X-ray phase powder diffraction. It has been established that the system is not a real two-component system in the subsolidus area. The fact has been proved by the presence of fields in that area, where three solid phases remain in mutual equilibrium.

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Abstract  

A diagram of the phase equilibria established in the solid state in the system FeVO4−Fe2WO6 was plotted on the basis of X-ray phase analysis and DTA. This system, one of the intersections of the three-component system Fe2O3−V2O5−WO3, does not appear to be a real two-component system in the solid state.

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Abstract  

Phase equlibria in the solid state in the system Fe2WO6−Fe8V10W16O85 were studied by means of X-ray phase powder diffraction and differential thermal analysis, This system is one of the intersections of the three-component system Fe2O3−V2O5−WO3. The investigation demonstrated that the system is not a real two-component system even below the solidus line.

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Abstract  

Phase equilibria up to the solidus line in the system Fe2O3−Fe8V10W16O85 were determined by means of X-ray phase powder diffraction and differential thermal analysis. This system is one of the intersections of the three-component system Fe2O3−V2O5−WO3. The studies revealed that this is not a real binary system, even in the solid state.

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Abstract  

The V9Mo6O40−Cr2(MoO4)3 system has been investigated using the differential thermal analysis (DTA) and X-ray phase diffraction methods. The system has been found not to be a real two-component system over the whole component system.

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Abstract  

The phase equilibria established up to the solidus line in the system Fe2V4O13−WO3, one of the intersections of the three-component system Fe2O3−V2O5−WO3, have been studied. The system appears not to be a real two-component system.

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Journal of Thermal Analysis and Calorimetry
Authors: Jadwiga Walczak, Izabella Rychłowska-Himmel, and Elżbieta Mikos-Nawłatyna

Abstract  

Phase equilibria being established in the solid state in the system V2O5−Fe8V10W16O85 were examined by X-ray phase powder diffraction and DTA. It has been found that the system of interest is a real two-component system with an eutectic temperature 6205C.

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