Estimation of the temporary service life of DC arc plasmatron cathode
- Authors: Kulygin V.M.1, Pereslavtsev A.V.1, Tresvyatskii S.S.1
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Affiliations:
- National Research Center Kurchatov Institute
- Issue: Vol 62, No 9 (2017)
- Pages: 1327-1331
- Section: Plasma
- URL: https://journals.rcsi.science/1063-7842/article/view/199954
- DOI: https://doi.org/10.1134/S1063784217090146
- ID: 199954
Cite item
Abstract
The service life of the cathode of a DC arc plasmatron continuously working with tubular electrodes that operate in the air has been considered using the semi-phenomenological approach. The thermal emission, that ensures the necessary flow of electrons, and the evaporation of the cathode material, which determines its erosion, have been taken as the basic physical phenomena that constitute the workflow. The relationships that enable the estimation of the cathode’s operating time have been obtained using the known regularities of these phenomena and experimental data available in the literature. The resulting evaluations coincide satisfactorily with the endurance test results.
About the authors
V. M. Kulygin
National Research Center Kurchatov Institute
Author for correspondence.
Email: Kulygin_VM@nrcki.ru
Russian Federation, Moscow, 123182
A. V. Pereslavtsev
National Research Center Kurchatov Institute
Email: Kulygin_VM@nrcki.ru
Russian Federation, Moscow, 123182
S. S. Tresvyatskii
National Research Center Kurchatov Institute
Email: Kulygin_VM@nrcki.ru
Russian Federation, Moscow, 123182