83 research outputs found
Zustandsdiagramm des Systems V2O5 - K1,20V2O5
Untersucht wurde das Zustandsdiagramm binären Schnitts V2O5 - K1,20V2O5 des Dreikomponentensystems K2O - V2O5 - (VO2)2 unter Inertgasatmosphäre
A thermoanalytical study of the interaction of vanadiumoxide(V) with calcium oxide and calcium carbonate
Determination of heats of formation of potassium and lithium vanadium oxide bronzes MxV2O5 of the ? type
Diffusion of barium ions in the Ba3-3xLa2x?x(VO4)2 solid solution
Diffusion coefficients for 133Ba, 90Sr, and 45Ca radionuclides in the solid solution Ba3-3xLa2x?x(VO4)2 (x = 0, 0.05, 0.1, 0.15) are measured in the temperature range 800 to 1000°C using the layer-by-layer radiometric analysis. It is established that Dca* ? DSr? > DBa*. Increasing the concentration of vacancies ? in the barium sublattice leads to an increase in the diffusion coefficients of the alkaline-earth metal cations. The activation energies for the radionuclide diffusion are determined; their values (?1.1 eV) are close to the activation energy for ionic conduction. Cations M2+ are shown to migrate via the positions of Ba(2). © 1999 MAHK "Hayka/Interperiodica Publishing"
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