LOW-VOLTAGE PULSE ELECTRIC ARC METHOD OF PRODUCING METAL NANOPOWDER IN LIQUID MEDIUM Russian patent published in 2016 - IPC B22F9/14 B82Y30/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to low-voltage pulse electric-arc production of metal nanopowder in liquid medium. Method involves installation of two electrodes in a vessel with a liquid medium, applying pulse voltage to electrodes to form plasma in liquid medium and formation of nanoparticles from material of electrodes, precipitation of nanoparticles. Method uses a first electrode, installed with possibility of vibration on mechanical vibrator and with possibility of back-and-forth movement along entire length of second electrode. Second electrode used is a strip from same material, as first electrode, fixed at bottom of vessel with liquid medium. Bipolar pulses are applied on electrodes from a low-voltage generator with forced closure and opening of electrical circuit. Discharge gap between electrodes is sinusoidally varied to allow generation of high-current discharge between electrodes.

EFFECT: increased intensity of electric field between electrodes and reduced contamination of produced powder.

1 cl, 1 ex