Deep black decorative coating with increased thermal stability
AssigneeOerlikon Surface Solutions AG, PfäFfikon
InventorJulien KERAUDY
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Abstract
The present invention relates to a coating that includes at least an optically absorbing metal oxide and/or oxynitride deep black layer deposited directly onto the surface of the part to be coated. In another embodiment, the deep black layer is deposited on a metallic adhesion-promoting layer, followed by a hard and optically transparent oxynitride layer. The foregoing coatings may be deposited by a reactive magnetron sputtering method and exhibit enhanced thermal stability at temperatures above 400° C.
Claims22
A coating deposited on a substrate, the coating comprising:
- a deep black metal oxide and/or oxynitride layer deposited directly onto the substrate or onto a metallic-adhesion promoting layer
- followed by a hard and optically transparent oxynitride layer.
A process of depositing a deep black coating on a substrate, comprising steps of:
- implementing a closed loop control of a reactive gas in a coating chamber to deposit a deep black metal oxide and/or oxynitride layer directly onto the substrate;
- and
- maintaining conditions achieved during the foregoing step for a predetermined period of time to deposit an optically transparent oxynitride layer on the deep black metal oxide and/or oxynitride layer.
Dependencies are inferred from the claim text.