This article is cited in 8 papers

Explosive synthesis of ultradisperse aluminum oxide in an oxygen-containing medium

A. A. Bukaemskii, A. G. Beloshapko

Physicotechnical Institute, Krasnoyarsk State University, Krasnoyarsk, 660036

Abstract: 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 shock-compressed material into liquid and solid layers. Possible mechanisms of aluminum combustion 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 shock-compressed material. Experimental dependences of the yield of the disperse fraction on synthesis conditions are explained using the model proposed.

UDC: 621.762.21 + 541.18.041

Received: 31.03.2000

 English version: Combustion, Explosion and Shock Waves, 2001, 37:5, 594–599

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