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Fizika Goreniya i Vzryva, 1998 Volume 34, Issue 1, Pages 45–49 (Mi fgv2419)

This article is cited in 5 papers

Mechanism of oxidation of powdered metals during heating in air

V. G. Shevchenko, V. I. Kononenko, M. A. Bulatov, I. N. Latosh, I. A. Chupova

Institute of Solid-State Chemistry, Ural Division, Russian Academy of Sciences, 620219, Ekaterinburg

Abstract: It is shown that the oxidation of aluminum powders and rare-earth elements as the temperature rises is accompanied by cracking of a layer of interaction products at the particle surface. The intensity of cracking is reflected in the change of the specific powder surface during heating, and it depends on the phase formation in the barrier layer and its physicochemical properties. The real oxidation rate of disperse metals is higher than the diffusion rate in oxides, which indicates the determining role of cracking in the interaction mechanism.

UDC: 541.1+620.193+621.762

Received: 09.07.1996
Accepted: 23.04.1997


 English version:
Combustion, Explosion and Shock Waves, 1998, 34:1, 40–43


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