Vacuum-arc plasma apparatus for producing coatings

H - Electricity – 05 – H

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H05H 1/48 (2006.01) C23C 14/32 (2006.01) H05H 1/50 (2006.01)

Patent

CA 1170315

ABSTRACT The invention comprises a tubular anode, a consu- mable cathode with a working end portion and an igni- ting electrode for forming a cathode spot of an arc dis- charge on the consumable cathode, both elements being disposed coaxially within the tubular anode, a solenoid encircling the tubular anode and disposed coaxially therewith. The solenoid is so disposed relative to the tubular anode, the consumable cathode and the igniting electrode that it projects beyond the igniting electrode at the side opposite to the working end portion of the consumable cathode by a distance exceeding half a length of the portion of the solenoid, disposed around the con- sumable cathode. The number of turns per length unit of the portion of the solenoid, disposed around the consu- mable cathode, is greater than the number of turns per length unit in the remaining portion of the solenoid. The invention is utilized for producing coatings. The drawing given in the specification.

378498

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