Film-coated glazing having a protective layer of mixed titanium oxide
AssigneeAgc Glass Europe
InventorGaetan Di Stefano
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Abstract
The present invention relates to essentially transparent glazings comprising a system of films deposited under vacuum by magnetron, and having antisun and/or low-emission properties, comprising as protective surface layer a layer based on titanium oxide and on at least one other metal oxide of high hardness from the group comprising: ZrO2, SiO2, Cr2O3. The glazings according to the invention are of a nature to withstand a heat treatment at 550° C. for 5 minutes without giving rise to the presence of optical effects, especially of coloration or iridescence. These glazings are termed toughenable.
Claims22
An essentially transparent glazing comprising a system of films deposited under vacuum by magnetron and having antisun properties, low-emission properties, or both properties, the system of films comprising:
- a silver-comprising functional layer,
- a sacrificial layer coating the silver-comprising functional layer, the sacrificial layer comprising an oxide or suboxide of Ti, Zr, Nb, or NiCr, and
- a top coat comprising a first protective layer,
- wherein the first protective layer consists essentially of titanium oxide and at least one other metal oxide of high hardness selected from the group consisting of ZrO2 and Cr2O3, and
- wherein the glazing is toughened.
An essentially transparent glazing comprising a system of films deposited under vacuum by magnetron and having antisun properties, low-emission properties, or both properties, the system of films comprising:
- a layer comprising zinc oxide optionally doped with tin, aluminum, or gallium,
- a silver-comprising functional layer, deposited on the layer comprising zinc oxide, and
- a top coat comprising a first protective layer consisting essentially of titanium oxide and at least one other metal oxide of high hardness selected from the group consisting of ZrO2 and Cr2O3.
An essentially transparent glazing comprising a system of films deposited under vacuum by magnetron and having antisun properties, low-emission properties, or both properties, the system of films comprising:
- a silver-comprising functional layer,
- a sacrificial layer coating the silver-comprising functional layer, the sacrificial layer comprising an oxide or suboxide of Ti, Zr, Nb, or NiCr, and
- a top coat comprising a first protective layer,
- wherein the first protective layer consists of (i) titanium oxide;
- (ii) at least one other metal oxide of high hardness selected from the group consisting of ZrO2 and Cr2O3;
- and (iii) optionally one or more additional oxides that are practically indissociable from the oxides of (i) and (ii), and
- wherein the glazing is toughened.
Dependencies are inferred from the claim text.