Process and device for magnetron sputtering cleaning a metal strip

The procedure consists of brightening a metal strip (4), especially of steel, in a vacuum chamber (2) prior to coating by subjecting it to a gas plasma as it passes round a roller (3) of a conducting material and faces a counter-electrode (5) generating radicals and/or ions. It differs in the select...

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Bibliographische Detailangaben
Hauptverfasser: MOTTOULLE, JACQUES, DEWEER, BENOIT, MABOGE, CLAUDE, CORNIL, HUGUES
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The procedure consists of brightening a metal strip (4), especially of steel, in a vacuum chamber (2) prior to coating by subjecting it to a gas plasma as it passes round a roller (3) of a conducting material and faces a counter-electrode (5) generating radicals and/or ions. It differs in the selection of a closed magnetic circuit (7) of similar width to the strip from a series of two or more such circuits of different widths, and positioning it so that it faces the strip. The magnetic circuit is made from rows of magnets laid side by side, with two successive rows having opposite polarities, and generates a magnetic field at a tangent to the strip with an intensity of at least 300 Gauss.