文档介绍：Combustion, Explosion, and Shock Waves, Vol. 37, No. 5, pp. 594–599, 2001
Explosive Synthesis
of Ultradisperse Aluminum Oxide
in an Oxygen-Containing Medium
A. A. Bukaemskii1 and A. G. Beloshapko1 UDC +
Translated from Fizika Goreniya i Vzryva, Vol. 37, No. 5, pp. 114–120, September–October, 2001.
Original article submitted March 31, 2000.
Explosive synthesis of ultradisperse aluminum oxide in an oxygen-containing medium
is studied. Synthesis conditions that are most optimal for production of the material in
the ultradisperse state are determined. A physical model of the process is proposed. It
is shown that attenuation of the shock wave causes separation of the pressed
material into liquid and solid layers. Possible mechanisms of bustion
with subsequent dispersion of aluminum into the oxygen-containing medium of the
explosive chamber are considered. It is shown that ultradisperse aluminum oxide
powder is produced mainly from the second layer of the pressed material.
Experimental dependences of the yield of the disperse fraction on synthesis conditions
are explained using the model proposed.
At present, there are approximately twenty differ- implementation of chemical reactions in a shock-wave
ent methods of producing ultradisperse materials [1, 2]. front [6]. However, capsule methods have certain dis-
Interest in these mater