Hydrophobic coating including DLC on substrate
First Claim
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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 including diamond-like carbon (DLC) and sp3 carbon-carbon bonds provided on said glass substrate; and
wherein said hydrophobic coating has an initial contact angle θ
with a sessile drop of water thereon of at least about 100 degrees, and an average hardness of at least about 10 GPa.
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Abstract
A substrate is coated with a hydrophobic coating that includes highly tetrahedral amorphous carbon that is a form of diamond-like carbon (DLC). In certain embodiments, the coating is deposited on the substrate in a manner to increase its hydrophobicity (e.g. so that the coating has an initial contact angle θ of at least about 100 degrees; and/or a surface energy of no more than about 20.2 mN/m). In certain embodiments, the coating 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.
28 Citations
49 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 including diamond-like carbon (DLC) and sp3 carbon-carbon bonds provided on said glass substrate; and
wherein said hydrophobic coating has an initial contact angle θ
with a sessile drop of water thereon of at least about 100 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)
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18. A coated article comprising:
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a substrate;
a coating including diamond-like carbon (DLC) provided on said substrate, said coating including sp3 carbon-carbon bonds; and
wherein said coating has an initial contact angle θ
with a drop of water of at least about 100 degrees, and an average hardness of at least about 10 GPa. - View Dependent Claims (19, 20)
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21. A coated glass article comprising:
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a glass substrate; and
a hydrophobic coating including diamond-like carbon (DLC) provided on said glass substrate, wherein said hydrophobic coating has an initial contact angle θ
with a drop of water of at least about 110 degrees, and an average hardness of at least about 10 GPa. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A coated glass article comprising:
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a glass substrate; and
a coating including diamond-like carbon (DLC) provided on said glass substrate, wherein the outermost 5Å
of said coating includes in atomic percentage at least about 50% H. - View Dependent Claims (35, 36, 38)
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37. A method of making a coated article, the method comprising the steps of:
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providing a substrate; and
depositing a highly tetrahedral amorphous carbon (ta-C) inclusive coating having more sp3 carbon-carbon bonds than sp2 carbon-carbon bonds on the substrate in a manner such that the ta-C inclusive coating has an initial contact angle θ
of at least about 100 degrees. - View Dependent Claims (39, 40, 41, 42)
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43. An automotive window comprising:
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a substrate transparent to at least about 70% of visible light rays;
a highly tetrahedral amorphous carbon inclusive coating provided on said substrate, wherein said coating has a thickness of from about 50 to 1,000 Å and
a substantial number of sp3 carbon-carbon bonds;
wherein the automotive window comprises the following optical characteristics;
visible transmittance; >
70%UV transmittance; <
38%IR transmittance;
<
35%;wherein said coating has an initial contact angle of at least about 100 degrees. - View Dependent Claims (44)
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45. A coated glass article comprising:
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a glass substrate;
at least one hydrophobic coating including diamond-like carbon (DLC) provided on said substrate; and
wherein at least one 10Å
thick layer portion of said hydrophobic coating includes, in atomic percentage, from about 15-80% carbon (C), from about 5-45% oxygen (O), from about 5-45% silicon (Si), from about 0-30% hydrogen (H), and from about 0-10% fluorine (F). - View Dependent Claims (46)
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47. A coated article comprising:
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a glass substrate;
a coating including diamond-like carbon (DLC) provided on said glass substrate, said coating including sp3 carbon-carbon bonds; and
wherein said coating is doped so as to have an index of refraction “
n”
of no greater than about 1.75. - View Dependent Claims (48)
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49. A method of cleaning a glass substrate comprising the steps of:
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providing a linear ion beam source;
directing an ion beam from the source toward the glass substrate in a manner so that impurities on a surface of the glass substrate are removed by the ion beam; and
said directing step being performed in a manner so as to create free radicals on the surface of the substrate.
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Specification