Oxidation of ASD-4 Powder Modified by V2O5
V. G. Shevchenko1, D. A. Eselevich1, N. A. Popov1, V. N. Krasilnikov1, Z. S. Vinokurov2, A. I. Ancharov3,4, B. P. Tolochko4,5
1Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, Ekaterinburg, 620990 Russia
2Boreskov Institute of Catalysis.Г Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
3Novosibirsk State University, Novosibirsk, 630090 Russia
4Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
5Institute of Solid State Chemistry and Mechanochemistry, Novosibirsk, 630128 Russia
Keywords: алюминий, порошок, поверхность, модификация, пентоксид ванадия, окисление, фазовый анализ, aluminum, powder, surface, modification, vanadium pentoxide, oxidation, phase analysis
Abstract
The sequence of phase formation during ASD-4 aluminum powder modified by vanadium pentoxide during heating in air in the temperature range 873-1073 K was studied by synchrotron radiation X-ray diffraction. It was shown that the sharp acceleration of the oxidation of the modified powder was associated with the loss of the protective properties of the oxide shell on the particle surface due to the polyvalence of vanadium, which provides structural and phase changes on the surface and in the depth of oxidized metal.
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