Modifiable magnet configuration for arc vaporization sources

H - Electricity – 01 – J

Patent

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H01J 37/32 (2006.01) H01J 37/34 (2006.01)

Patent

CA 2751811

The present invention relates to an arc vaporization source for generating hard surface coatings on tools. The invention comprises an arc-vaporization source, comprising at least one electric solenoid and a permanent magnet arrangement that is displaceable relative to the target surface. The vaporization source can be adjusted to the different requirements of oxide, nitride, or metal coatings. The rate drop during the lifespan of a target to be vaporized can be held constant or adjusted by suitably adjusting the distance of the permanent magnets to the front side of the target. A compromise between the coating roughness and rate can be set.

La présente invention concerne une source de vaporisation à arc destinée à la réalisation de couches de matière dure sur des outils, et en particulier une source de vaporisation à arc constituée d'au moins une bobine d'électroaimant et d'un dispositif d'aimant permanent mobile par rapport à la surface de la cible. Cette source de vaporisation est adaptable aux différentes exigences des couches d'oxydes, de nitrures ou de métal. La baisse de rendement affectant la cible à vaporiser pendant toute la durée de sa vie peut être maintenue constante, voire être réglée, grâce à l'utilisation d'un éloignement approprié de l'aimant permanent par rapport à la face antérieure de la cible. L'invention permet un bon compromis entre rugosité de couche et rendement.

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