Physical effects in electrical discharge of atmospheric pressure caused by external flow of copper cathode by water

8th All-Russian Conference on Low Temperature Plasma in the Processes of Functional Coating Preparation

Tazmeev, Kh K.^1 ; Timerkaev, B.A.^2 ; Tazmeev, G. Kh^2

Kazan Federal University, Naberezhnye Chelny Institute, 68/19 Mira Street, Naberezhnye Chelny

423810, Russia^1

Kazan National Research Technical University Named after A.N. Tupolev, 10 K.Marx str., Kazan

420111, Russia^2

关键词: Copper cathodes;    Copper electrodes;    Dielectric tubes;    Electrical discharges;    Electrode spacing;    Fine particles;    Physical effects;    Plasma columns;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/789/1/012061/pdf
DOI  :  10.1088/1742-6596/789/1/012061

来源: IOP

【 摘 要 】

This article experimentally studies gas discharge between copper electrodes in the current range of 5-20 A. The electrode spacing was varied in the range of 45-70 mm. The cathode was a rod with a diameter of 10 mm and was located in the water stream, poured from a dielectric tube. Three variants that differed in the working end of the cathode arrangement were studied: 1) over the water; 2) on the surface of the water; 3) underwater. It was established that in the second variant in the plasma column near the cathode an extended area is formed with of intense radiation of hydrogens. In the third option, a significant erosion of the cathode was detected. It was revealed that in the process of erosion fine particles of copper metal are formed.