Hydrophobic coating including DLC on substrate
First Claim
1. A coated glass article comprising:
- a glass substrate comprising, on a weight basis;
SiO2 from about 60-80%, Na2O from about 10-20%, CaO from about 0-16%, K2O from about 0-10%, MgO from about 0-10%, Al2O3 from about 0-5%;
a hydrophobic coating system including diamond-like carbon (DLC) and sp3 carbon-carbon bonds provided on said glass substrate;
said hydrophobic coating system including first and second DLC inclusive layers, said first layer including silicon (Si) and being provided between said second layer and said substrate;
wherein said second layer is deposited in a manner so that said second layer has a higher hardness and higher density than said first layer; and
wherein said hydrophobic coating system has an initial contact angle θ
with a sessile drop of water thereon of at least about 80 degrees, and an average hardness of at least about 10 GPa.
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Accused Products
Abstract
A substrate is coated with a hydrophobic coating system including highly tetrahedral amorphous carbon that is a form of diamond-like carbon (DLC). In certain embodiments, the coating system is deposited on the substrate in a manner to increase its hydrophobicity. In certain embodiments, the coating system is deposited in a manner such that it has an average hardness of at least about 10 GPa, more preferably from about 20-80 GPa. In certain embodiments, the coating system includes first and second DLC inclusive layers that are deposited using one or more ion beam deposition devices, wherein different gases are used to deposit the respective DLC inclusive layers such that the overlying layer has greater scratch resistance characteristics than the underlying layer which functions as an anchoring layer.
217 Citations
36 Claims
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1. A coated glass article comprising:
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a glass substrate comprising, on a weight basis;
SiO2 from about 60-80%, Na2O from about 10-20%, CaO from about 0-16%, K2O from about 0-10%, MgO from about 0-10%, Al2O3 from about 0-5%;
a hydrophobic coating system including diamond-like carbon (DLC) and sp3 carbon-carbon bonds provided on said glass substrate;
said hydrophobic coating system including first and second DLC inclusive layers, said first layer including silicon (Si) and being provided between said second layer and said substrate;
wherein said second layer is deposited in a manner so that said second layer has a higher hardness and higher density than said first layer; and
wherein said hydrophobic coating system has an initial contact angle θ
with a sessile drop of water thereon of at least about 80 degrees, and an average hardness of at least about 10 GPa.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
visible transmittance (Ill. A);
>
60%UV transmittance;
<
38%IR transmittance;
<
35%.
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16. The coated glass article of claim 1, wherein each of said first and second layers include sp3 carbon-carbon bonds.
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17. The coated glass article of claim 1, wherein at least about 50% of carbon-carbon bonds in said second layer are sp3 carbon-carbon bonds.
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18. A coated article comprising:
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a substrate;
a coating system including first and second diamond-like carbon (DLC) inclusive layers provided on said substrate, said first layer further including silicon (Si); and
wherein said coating system has an initial contact angle θ
with a drop of water of at least about 80 degrees, and an average hardness of at least about 10 GPa.- View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
visible transmittance (Ill. A);
>
60%UV transmittance;
<
38%IR transmittance;
<
35%.
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24. The coated article of claim 18, wherein at least about 50% of carbon-carbon bonds in said second layer are sp3 carbon-carbon bonds, and wherein said first layer also comprises sp3 carbon-carbon bonds.
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25. The coated article of claim 18, wherein an outermost 10 angstrom layer portion of said second layer includes in atomic percentage:
- from about 5-60% carbon (C), from about 0-40% oxygen (O), from about 0-40% silicon (Si), from about 10-95% hydrogen (H), and from about 0-10% fluorine (F).
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26. A coated article comprising:
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a substrate;
a coating system including at least one diamond-like carbon (DLC) inclusive layer provided on said substrate; and
wherein said coating system has an initial contact angle θ
with a drop of water of at least about 80 degrees, an initial tilt angle β
of no greater than about 30 degrees, and an average hardness of at least about 10 GPa.- View Dependent Claims (27, 28, 29, 30, 31, 32)
wherein said first layer is located between said second layer and said substrate; and
wherein said second layer has a greater hardness and a greater density than said first layer.
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30. The coated article of claim 26, wherein said coating system includes first and second DLC inclusive layers;
- and wherein a cross section of said first DLC inclusive layer includes at least about five (5) times as much Si as a cross sectional thickness of said second DLC inclusive layer.
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31. The coated article of claim 30, wherein a cross sectional thickness of said first layer includes at least about two (2) times as many O atoms as a cross sectional thickness of said second layer.
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32. The coated article of claim 31, wherein a cross sectional thickness of said first layer includes substantially less C atoms than a cross sectional thickness of said second layer.
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33. A coated article comprising:
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a substrate;
a coating system including a diamond-like carbon (DLC) inclusive portion having at least one layer provided on said substrate; and
wherein an amount of carbon, C, progressively increases through a substantial portion of a thickness of the DLC inclusive portion toward an exterior surface of the coating system. - View Dependent Claims (34, 35, 36)
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Specification