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Fizika Goreniya i Vzryva, 2006 Volume 42, Issue 2, Pages 61–69 (Mi fgv1577)

This article is cited in 33 papers

Effect of the passivating coating type, particle size, and storage time on oxidation and nitridation of aluminum powders

A. A. Gromov, A. P. Ilyina, U. Foerter-Barthb, U. Teipelb

a Tomsk Polytechnic University, Tomsk, 634050
b Fraunhofer Institute of Chemical Technology, D-76327, Pfinztal, Germany

Abstract: Processes of nonisothermal oxidation, nitridation, and ageing of aluminum powders with different particle sizes (nano-sized powder, ASD-1 powder, and PAP-2 powder) are considered. Application of non-oxide coatings onto particles of aluminum nanopowders reduces their thermal stability. Owing to scale-shaped particles, the PAP-2 powder after long-time storage preserves high activity of oxidation and nitridation, which is commensurable with that of the aluminum nanopowder. The activity of the coarse ASD-1 powder consisting of spherical particles in terms of oxidation and nitridation is low and only slightly changes during ageing.

Keywords: aluminum powders, non-oxide coatings, oxidation, ageing, nitridation, air.

UDC: 541.16:182

Received: 08.12.2004
Accepted: 20.05.2005


 English version:
Combustion, Explosion and Shock Waves, 2006, 42:2, 177–184

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