The initiation of arcs by ion bombardment

Autor:	O Lloyd, C F Gozna, G Jervis-Hunter
Rok vydání:	1970
Předmět:	Materials science Argon Acoustics and Ultrasonics chemistry.chemical_element Biasing Vacuum arc Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Anode Electric arc chemistry Electrode Figure of merit Graphite Atomic physics
Zdroj:	Journal of Physics D: Applied Physics. 3:1670-1677
ISSN:	0022-3727
DOI:	10.1088/0022-3727/3/11/316
Popis:	The arcing behaviour of a number of refractory metals and graphite has been examined by negatively biasing specimen electrodes in the presence of a pulsed rf discharge. The main object of this work was to select anode materials for gas-filled valves which would reduce their tendency to arc-bank under severe commutation conditions. The voltage at which about 5% of the pulses resulted in an arc, at an argon ion current density of 1·2 kA m−2, was used as a figure of merit. Of the materials examined, tungsten was the best with a figure of merit of 15 kV and graphite the worst with 6 kV. A good correlation was obtained between the results and the published values for the vacuum arc voltages.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7e5b6c184563dc2d52561da1ba51901b https://doi.org/10.1088/0022-3727/3/11/316 Zobrazit plný text záznamu