DBPapers
DOI: 10.5593/SGEM2014/B61/S24.012

EXPLOSIVE CONSOLIDATION OF NANOCRYSTALLINE SI POWDERS

N. Chikhradze, A. Gigineishvili, M. Chikhradze, B. Godibadze, N. Bochorishvili
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-20-9 / ISSN 1314-2704, June 19-25, 2014, Book 6, Vol. 1, 85-92 pp

ABSTRACT
Nanoscale and coarse Si powders (average particle size, 40nm) was object of the
investigations. The large grained coarse Si particles preliminary were treated in
vibration and planetary ball mill for transformation of powder in nanoscale. The
nanopowder was placed in a steel container and compacted by explosively induced
shock waves of cylindrical symmetry. Industrial explosives were used for the generation of shock waves. Explosive compaction experiments were performed in range of pressure impulses of 3-20 GPa. This densification process performed in two stages: a) static and b) dynamic loadings. The relationships between the nanopowder preparation, compacting conditions, the precursor particle sizes and properties of the consolidated bulk nanostructured material are discussed in the paper.

Keywords: Nanocrystalline Powder, Si, Shock Wave, Explosive, Compaction