Densification of Nano-Sized Alumina Powders under Radial Magnetic Pulsed Compaction

Abstract:

An influence of aggregation degree of alumina nanopowder and of radial magnetic pulsed compaction conditions on the powder densification and on the density distribution inside compacts has been investigated experimentally. The usage of radial magnetic pulsed compaction allows to compact alumina nanopowders up to high densities at low degree of aggregation. The compacts homogeneity is attained by appropriate compaction pulse duration and by the usage of powder packing prior to compaction until the condition with high local sound speed is achieved.

• Periodical: Advances in Science and Technology (Volume 45)
• Pages: 899-904
• DOI: https://doi.org/10.4028/www.scientific.net/AST.45.899
• Online since: October 2006
• Authors: S. Paranin, Victor Ivanov, Alexey Nikonov, A. Spirin, Vladimir Khrustov, S. Ivin, Anton Sergeevich Kaygorodov, P. Korolev
• Keywords: Aggregate, Densification, Density Distributions, Magnetic Pulsed Compaction (MPC), Nanopowder

References

[1] D.J. Sandstrom: Metal Progr. Vol. 86 (1964), p.215.

[2] V.А. Мironov: Magnetic-pulsed compaction of powders (Zinatne, Riga, USSR 1980) in Russian.

[3] J.R. Groza and R.J. Dowding: Nanostructured Materials Vol. 7 (1996), p.749.

[4] R.A. Graham and A.B. Sawaoka: High Pressure Explosive Processing of Ceramics (Trans Tech Publications, Switzerland 1987).

[5] Y. Kotov, I. Beketov. E. Azarkevich and A. Murzakaev: Ceramics: Getting into the 2000's - part C (Proc. of 9th CIMTEC Florence, Italy 1999).

[6] H. Knoepfel: Pulsed High magnetic fields (North-Holland Publishing Company, Amsterdam - London 1970).

[7] V. Ivanov, S. Paranin, V. Khrustov and A. Medvedev: Ceramics: Getting into the 2000`s - Part C (Proc. of 9th CIMTEC Florence, Italy 1999).

[8] R. Baccino, R. David and C. Parayre: BOPI Brevets, No 42 (France 1987).

[9] S.V. Dobrov and V.V. Ivanov: Technical Physics Vol. 49 (2004) p.413.