This article is cited in 18 papers

Explosive compaction and low-temperature sintering of alumina nanopowders

A. A. Bukaemskii^a, E. N. Fedorova<sup>b

a</sup> Institute for Energy Research, Safety Research and Reactor Technology, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
^b Polytechnical Institute, Siberian Federal University, Krasnoyarsk, 660074, Russia

Abstract: Physical aspects of explosive compaction of alumina nanopowders with different phase compositions are studied experimentally. Physical processes that occur during consolidation of nanoparticles under pulsed loading are considered. Conditions of retaining of the material nanostructure after compaction and subsequent low-temperature sintering are determined. Physicomechanical properties of explosive compacts and ceramics on the basis of these compacts are studied. A ceramic material characterized by a nanostructure (grain size of $\approx$200 nm) and high values of density (97% of the theoretical value) and microhardness (up to 23.5 GPa) is obtained.

Keywords: взрывное компактирование, оксид алюминия, нанопорошок, метастабильность, низкотемпературное спекание, нанокомпозит, микротвердость.

UDC: 621.762.21+539.89+538.91

Received: 01.04.2005
Accepted: 03.04.2008

 English version: Combustion, Explosion and Shock Waves, 2008, 44:6, 717–728

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