Effect of V2O5 on the Oxidation Mechanism of ASD-4 Powder
V. G. Shevchenko1, V. N. Krasil'nikov1, D. A. Eselevich1, A. V. Konyukova1, A. I. Ancharov2,3, B. P. Tolochko2
1Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, Ekaterinburg, 620990 Russia
2Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Novosibirsk, 630128 Russia
3Novosibirsk State University, Novosibirsk, 630090 Russia
Keywords: порошкообразный алюминий, ванадийсодержащие гидрогели, активация окисления, полнота окисления, in-situ исследование структурного превращения, powdered aluminum, vanadium-containing hydrogels, activation of oxidation, completeness of oxidation, in-situ study of structural conversion
Abstract
Thermokinetic data on the oxidation of ASD-4 powder modified by impregnation with V2O5 gel were obtained by thermogravimetry and differential scanning calorimetry under heating in air to 1250 °C at a rate of 10 deg/min. The phase formation process directly during oxidation of the modified ASD-4 was studied by powder x-ray diffraction method using a synchrotron radiation source. A mechanism for the effect of V2O5 on the oxidation of ASD-4 is proposed on the basis of literature data and analysis of the results of the studies performed.
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