Glazing comprising a protective coating
AssigneeSaint-Gobain Glass France
InventorsAlexandre MAILLET, Laura Jane SINGH
Life of this patent
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Abstract
A material includes a transparent substrate coated with a stack of thin layers acting on infrared radiation including at least one functional layer. The stack includes a protective coating deposited above at least a part of the functional layer. The protective coating includes at least one lower protective layer based on titanium and zirconium, these two metals being in the metal, oxidized or nitrided form, and at least one upper protective layer of carbon, within which layer the carbon atoms are essentially in an sp2 hybridization state, located above the layer based on titanium and zirconium.
Claims20
A material comprising a transparent substrate coated with a stack of thin layers acting on infrared radiation comprising at least one functional layer, wherein the stack comprises a protective coating deposited above at least a part of the functional layer, the protective coating comprising:
- at least one lower protective layer based on titanium and zirconium, these two metals being in the metal, oxidized or nitrided form,
- at least one upper protective layer of carbon, within which layer the carbon atoms are essentially in an sp2 hybridization state, located above the layer based on titanium and zirconium.
A process for the preparation of a material comprising a transparent substrate coated with a stack of thin layers deposited by cathode sputtering, the process comprising the sequence of the following stages:
- depositing at least one functional layer on the transparent substrate, then
- depositing a lower protective layer based on titanium and zirconium, these two metals being in a metal, oxidized or nitrided form, above the dielectric layer based on silicon and/or aluminum nitride,
- depositing an upper protective layer of carbon, obtained by sputtering of a carbon target.
Dependencies are inferred from the claim text.