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JOURNALS // Fizika Goreniya i Vzryva // Archive

Fizika Goreniya i Vzryva, 2013 Volume 49, Issue 1, Pages 121–124 (Mi fgv14)

This article is cited in 6 papers

Experimental investigations of the controlled explosive synthesis of ultrafine Al$_2$O$_3$

R.-Y. Lia, X. Lib, H. Yanb, J. Pengc

a Department of Engineering Mechanics, China University of Petroleum (East China), Qingdao, Shandong, 266555, P.R. China
b Department of Engineering Mechanics, Dalian University of Technology, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian, Liaoning, 116023, P.R. China
c Holvrieka Co. Ltd., Nantong, Jiangsu, 226010, P.R. China

Abstract: The relation between the parameters of mixed explosives [combinations of Al(NO$_3$)$_3$ $\cdot$ 9H$_2$O powder, RDX powder, and/or polyethylene foaming particles] and the phase and dimension of ultrafine Al$_2$O$_3$ is studied in this paper. Experimental results indicate that mixed explosives with a high density of 1.8 g/cm$^3$ are adapted to prepare high-temperature $\alpha$-Al$_2$O$_3$. Ultrafine $(\alpha+\gamma)$-Al$_2$O$_3$ with $\alpha$-phase dominance is synthesized by the detonation of charges with a medium-high density of 1.3 g/cm$^3$. Explosives with a medium-low density of 0.8 g/cm$^3$ synthesize low-temperature pure $\gamma$-Al$_2$O$_3$.

Keywords: ultrafine Al$_2$O$_3$, phase, explosive synthesis, explosive parameter.

UDC: 621.762.21+541.18.04

Received: 07.10.2011
Revised: 02.07.2012


 English version:
Combustion, Explosion and Shock Waves, 2013, 49:1, 105–108

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© Steklov Math. Inst. of RAS, 2024