Open AccessElectrospark method for obtaining nanopowders
Author(s) -
М. М. Журавлев,
Roman Sazonov,
Galina Kholodnaya,
I.N. Pyatkov,
Denis Ponomarev
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1393/1/012156
Subject(s) - oscilloscope , materials science , voltage , generator (circuit theory) , pulse generator , current (fluid) , pulse duration , power (physics) , pulse (music) , yield (engineering) , metre , electrical engineering , electrode , analytical chemistry (journal) , optoelectronics , optics , engineering , metallurgy , chemistry , astronomy , laser , physics , chromatography , quantum mechanics
In the paper, a metallic Fe x O y nanopowder was obtained by the electrospark method. The used electrospark installation consists of the electrode system, mobility system, system for measuring processing parameters (oscilloscope and current sensor, HV voltage divider, manovacuum meter), source of current pulses, vacuum system (vacuum pump, gas cylinders with working gas, gas routes, gas taps). The specific feature of the installation is the use of a power supply circuit of two generators with different voltage levels operating for one interelectrode gap. This generator circuit makes it possible to change the treatment parameters in wide ranges (pulse duration 10–100 μs, pulse energy 0.1–0.6 J, pulse repetition rate 0.1–5 kHz). It will enable to choose the optimal ratio between the energy expended and the maximum yield of the product, as well as to study the influence of treatment parameters on the composition and properties of the resulting powder. The morphology and phase composition of the Fe x O y synthesized metal powder was studied.