Open AccessЭрозия катода в газовом дуговом разряде в области пороговых токов
Author(s) -
А.М. Мурзакаев
Publication year - 2021
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2021.11.51524.114-21
Subject(s) - erosion , materials science , argon , vacuum arc , tungsten , cathode , electrode , metallurgy , nitrogen , arc (geometry) , analytical chemistry (journal) , chemistry , environmental chemistry , paleontology , geometry , mathematics , organic chemistry , biology
The results of experimental studies of the erosion rate of high-purity tungsten cathodes after pulsed arc discharges in a pure oil-free ultrahigh vacuum and in gases of various purities are reported. The erosion rate in high-purity argon does not change compared to the rate of erosion of electrodes in a pure oil-free vacuum. The rate of erosion in "technical" argon is 10% less than the rate of erosion of electrodes in an oil-free vacuum. The rate of erosion in "technical" nitrogen is 15-35% less than the rate of erosion of electrodes in vacuum. Particle sizes formed in gas arcs are smaller than those formed in vacuum arcs.