Metal alloys for the reflective or the semi-reflective layer...

Details Metal alloys for the reflective or the semi-reflective layer... Metal alloys for the reflective or the semi-reflective layer...

G - Physics

11

B

G11B 7/258 (2006.01) B32B 3/00 (2006.01)

Patent

CA 2335578

A copper-based or silver-based alloy thin film is provided for the highly reflective (219) or semi-reflective (215) layer of optical discs. Alloy additions to silver include gold, palladium, copper, rhodium, ruthenium, osmium, iridium, and platinum. Alloy additions to copper include silver, cadmium, gold, magnesium, aluminum, and nickel. These alloys have moderate to high reflectivity and reasonable corrosion resistance in the ambient environment.

Un film mince en alliage à base de cuivre ou à base d'argent est utilisé pour la couche hautement réfléchissante (219) ou semi-réfléchissante (215) de disques optiques. Les éléments d'alliage pour l'argent comprennent l'or, le palladium, le cuivre, le rhodium, le ruthénium, l'osmium, l'iridium et le platine. Les éléments d'alliage pour le cuivre comprennent l'argent, le cadmium, l'or, le magnésium, l'aluminium et le nickel. Ces alliages ont un pouvoir de réflexion d'un niveau modéré à élevé et une résistance raisonnable à la corrosion dans l'environnement ambiant.

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