Features of a Low-Power, Low-Frequency, AC Arc between Solid and Liquid Electrodes

In this work, we studied an alternating current discharge in a copper sulfate solution (3% and 10%) with a distance l=150 mm between copper electrodes located inside a dielectric tube with an electrolyte at atmospheric pressure. On the basis of the obtained electrical characteristics of the discharge, a pattern of discharge generation was presented: electrolysis -breakdown - development of the discharge. Volt-ampere characteristics have a falling character, volt-second characteristics are of a direct exponential type, ampere-second characteristics are of a reciprocal exponential type. Using the fast Fourier transform, the voltage and current spectra were obtained. In the voltage spectrum, it was revealed that the voltage is little subject to fluctuations. It has been established that peaks corresponding to frequencies of 50, 150, 250, 350 Hz, etc. are observed in the current spectrum. It is revealed that the intermediate frequencies present in the current spectrum and constituting an almost continuous spectrum appear as a result of stochastic discharge-breakdown processes.

Section: Introductionmentioning

confidence: 99%

Generation of an alternating current discharge in a gas-liquid flow of a copper sulfate solution

Khafizov

Valiev

Gaisin

et al. 2022

Diagram of the plasma torch discharge chamber

Akhatov

Kayumov

Mardanov

et al. 2021

Investigation of Electric Discharge With Liquid Electrodes Under Influence on Carbon Fiber

Khazeev

Kayumov

Nizameev

et al. 2022

In this work, experimental reseaches of the effect of a DC electric discharge with jet electrolytic cathode and liquid anode at atmospheric pressure on carbon fiber are carried out. Experimental studies were carried out in the voltage range U= 100-1300 V and discharge current 1=0.02-1.8 A. A 20% NaCl solution in process water was used as liquid electrodes. The length of the jet varied lc = 10÷50 mm, the diameter of the jet dc = 1÷3 mm. The optimal form of discharge and modes for processing carbon fiber have been established. The optimal mode of electric discharge which is between a jet electrolytic cathode and a liquid anode at atmospheric pressure is revealed. After processing for 30 s, the tensile strength of the modified samples changed by 7% compared to the untreated sample.