文档介绍：Combustion, Explosion, and Shock Waves, Vol. 37, No. 4, pp. 418–422, 2001
Reactivity of Aluminum Powders
A. P. Il’in,1 A. A. Gromov,1 and G. V. Yablunovskii1 UDC :182
Translated from Fizika Goreniya i Vzryva, Vol. 37, No. 4, pp. 58–62, July–August, 2001.
Original article submitted April 11, 2000; revision submitted September 5, 2000.
The reactivity of aluminum powders is determined using the following parameters: the
temperature of the onset of oxidation, maximum oxidation rate, degree of conversion
(degree of oxidation) of aluminum, reduced (conditional) ratio of the thermal effect
to the weight increment. These parameters for estimating the activity of aluminum
powders were chosen from the results of nonisothermal oxidation of powders of various
particle sizes under conditions of programmed heating (oxidizer–air). In accordance
with the testing method proposed, the most reactive powder studied was STPA-4
ultrafine aluminum powder produced by electrical explosion of conductors.
INTRODUCTION known, such powders (with equal aluminum contents)
have different oxidation rates, degrees of oxidation (con-
Aluminum powder is an effective fuel: its mass version), etc., depending on their forms, sizes, and parti-
caloricity is more than twice that of magnesium, and cle distribution functions. With increase in particle size,
although ranking below boron and