Authors:
Yuri Chivel (MerPhotonics, France)
Abstract:
A process is presented for obtaining a spherical powder in a wide range of sizes 50 nm – 50 µm, in which a continuous near-surface optical discharge with a temperature of 20 kK is formed using conical laser beams in an argon flow, into which material is introduced in the form of a wire. The condensation are strongly and rapidly quenched by an inert gas flow at atmospheric pressure, producing high supersaturation . The process capacity is 0.5 kg|kWh with a laser power of 10 kW.The process of nanoparticle formation using inert gas condensation of metal vapour produced by conical laser beam vaporization of micropowder 40-60 µm stream with a particle concentration of 104-106 cm -3 has been investigated. Experimentally obtained nanoparticles 20-50 nm are collected in the form of conglomerates up to 100 nm in size. The productivity of the process reaches 0.2 g | W h .
DOI:
https://doi.org/10.59499/WP225371750