Open AccessOperating modes of vacuum plasmatrons with hollow cathodes
Author(s) -
A. S. Anshakov,
А. В. Чередниченко,
V. A. Serikov,
P. V. Domarov
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/560/1/012121
Subject(s) - tantalum , tungsten , materials science , cathode , molybdenum , plasma , glow discharge , vacuum arc , zirconium , current (fluid) , direct current , electric arc , electrode , analytical chemistry (journal) , atomic physics , chemistry , electrical engineering , metallurgy , voltage , physics , quantum mechanics , chromatography , engineering
Results of experimental studies of starting characteristics of vacuum plasma torches in glow discharge mode with switching to abnormal glow discharge and arc discharge are presented. It is demonstrated that if high-frequency current source is used parallel to direct current, ion current is increased and the time of starting mode is reduced. Experimental smelts of tantalum, tungsten, molybdenum, zirconium, and titan were carried out in operating modes with measurement of liquid metal surface temperature in relation to the supplied heating power.