Abstract
A theoretical study of the magnetic pulse compaction of nanosized powders is carried out. The uniaxial pressing and the radial (biaxial) compaction of powders using z- and θ-pinch setups are analyzed. The objects of study are two model systems that correspond to alumina-based nanopowders. System I corresponds to powders not inclined to strong aggregation and system II corresponds to powders in a strong aggregate state. Owing to the inertial effects under the radial pressing of conductive shells, high pressures are reached that exceed the initial “magnetic pressure” several times. A dimensionless number is found for the z-pinch that determines the process dynamics; its value range is established where most effective, “resonance,” conditions are realized.
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Original Russian Text © G.Sh. Boltachev, N.B. Volkov, E.A. Chingina, 2014, published in Rossiiskie Nanotekhnologii, 2014, Vol. 9, Nos. 11–12.
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Boltachev, G.S., Volkov, N.B. & Chingina, E.A. Nanopowders in dynamic magnetic pulse compaction processes. Nanotechnol Russia 9, 650–659 (2014). https://doi.org/10.1134/S1995078014060056
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DOI: https://doi.org/10.1134/S1995078014060056