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Explosive compaction and low-temperature sintering of alumina nanopowders

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Combustion, Explosion, and Shock Waves Aims and scope

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 ≈200 nm) and high values of density (97% of the theoretical value) and microhardness (up to 23.5 GPa) is obtained.

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Authors and Affiliations

  1. Institute for Energy Research, Safety Research and Reactor Technology, Forschungszentrum Jülich GmbH, D-52425, Jülich, Germany

    A. A. Bukaemskii

  2. Polytechnical Institute, Siberian Federal University, Krasnoyarsk, 660074, Russia

    E. N. Fedorova

Authors
  1. A. A. Bukaemskii
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  2. E. N. Fedorova
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Correspondence to A. A. Bukaemskii.

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Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 6, pp. 114–126, November–December, 2008.

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Bukaemskii, A.A., Fedorova, E.N. Explosive compaction and low-temperature sintering of alumina nanopowders. Combust Explos Shock Waves 44, 717–728 (2008). https://doi.org/10.1007/s10573-008-0108-8

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  • DOI: https://doi.org/10.1007/s10573-008-0108-8

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