Hydrophobic coating including DLC on substrate
AssigneeGuardian Industries Corp.
InventorVijayen S. Veerasamy
Life of this patent
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Abstract
A substrate is coated with a hydrophobic layer(s) that includes, for example, highly tetrahedral amorphous carbon that is a form of diamond-like carbon (DLC), or any other suitable material. In certain embodiments, the exterior surface of the resulting coated article exhibits a surface roughness sufficient so that the article has an initial contact angle θ of at least about 100 degrees. In certain embodiments, the layer has a surface energy of no more than about 20.2 mN/m and/or an average hardness of at least about 10 GPa.
Claims23
A coated glass article comprising:
- a glass substrate;
- a hydrophobic coating including diamond-like carbon (DLC) and sp3 carbon—carbon bonds provided on said glass substrate;
- and
- wherein an exterior surface of said hydrophobic coating includes peaks and valleys defined therein wherein peaks at the exterior surface of the coating have an average height “d” of from about 5-60 nm, said peaks and valleys being of sufficient size so that the hydrophobic coating has an initial contact angle θ with a sessile drop of water thereon of at least about 100 degrees.
A coated article comprising:
- a substrate;
- a hydrophobic layer including diamond-like carbon (DLC) provided on said substrate;
- and
- wherein an exterior surface of said hydrophobic layer has a roughness sufficient such that the hydrophobic layer has an initial contact angle θ with a sessile drop of water thereon of at least about 100 degrees.
A coated glass article comprising:
- a glass substrate;
- a hydrophobic coating including diamond-like carbon (DLC) and sp3 carbon—carbon bonds provided on said glass substrate;
- and
- wherein an exterior surface of said hydrophobic coating includes roughness defined thereon via peaks and valleys, and wherein the peaks at the exterior surface of the coating have an average height “d” of from about 10-50 nm.
Dependencies are inferred from the claim text.