Laminated structure, and method of manufacture thereof

Details Laminated structure, and method of manufacture thereof Laminated structure, and method of manufacture thereof

B - Operations, Transporting

32

B

B32B 9/00 (2006.01) C03C 17/22 (2006.01) C23C 14/06 (2006.01) G11B 7/24 (2006.01) G11B 7/243 (2006.01) G11B 7/253 (2006.01) G11B 7/257 (2006.01) G11B 7/26 (2006.01)

Patent

CA 2356217

A laminated structure which has a substrate formed of a synthetic resin or glass and a silicon carbide coating layer formed by sputtering, wherein the light transmittance of the silicon carbide coating layer is 80% or less. Preferably, the silicon carbide coating layer has a light reflectance of 10 to 50%, the synthetic resin is polycarbonate, the impurity ratio on the surface of the silicon carbide coating layer is 1.0 x 1012 atoms/cm2 or less, and the silicon carbide layer has a thickness of 15 to 100 nm. The laminated structure is suitable for a recording medium such as a CD-ROM and a DVD-ROM since it has a silicon carbide layer excellent in oxidation resistance, chlorine resistance, moisture resistance, and the like.

L'invention concerne une structure stratifiée comprenant un substrat de plastique ou de verre sur lequel est formée une couche de carbure de silicium déposée par pulvérisation cathodique et dont le facteur de transmission optique est inférieur ou égal à 80 %. De préférence, la couche de carbure de silicium possède un pouvoir de réflexion compris entre 10 et 50 %, le plastique est un polycarbonate, le taux d'impuretés à la surface de la couche de carbure de silicium est inférieur à 1,0 x 10<12> atomes/cm<2> et la couche de carbure de silicium possède une épaisseur comprise entre 15 et 100 nm. La structure stratifiée constitue une matière appropriée pour les supports d'enregistrement tels que des CD-ROM, et des DVD-ROM puisqu'elle comprend une couche de carbure de silicium résistant à l'oxydation, au chlore et à l'humidité.

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