Coating stack comprising a layer of barrier coating
First Claim
Patent Images
1. A coating composition, on a substrate, wherein the composition comprises:
- a functional coating comprising an inner layer and an outer layer;
at least one degradable layer located between the inner layer and the outer layer; and
at least one layer of barrier coating located between the inner layer and the outer layer,wherein the at least one layer of barrier coating has a permeability to oxygen no greater than 10 grams per m2 per day at a temperature of 900°
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Abstract
A coating composition that contains at least one degradable coating layer and at least one layer of barrier coating is disclosed. The coating composition can be used to make a coated substrate having improved performance over conventional coated substrates after exposure to heat and certain chemicals like halides such as chlorides, sulfur, salt, chlorine, alkali, and enamels.
100 Citations
48 Claims
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1. A coating composition, on a substrate, wherein the composition comprises:
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a functional coating comprising an inner layer and an outer layer; at least one degradable layer located between the inner layer and the outer layer; and at least one layer of barrier coating located between the inner layer and the outer layer, wherein the at least one layer of barrier coating has a permeability to oxygen no greater than 10 grams per m2 per day at a temperature of 900°
F. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A coated substrate comprising:
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a substrate; a functional coating on at least a portion of said substrate comprising; an inner layer and an outer layer; at least one degradable layer located between the inner layer and the outer layer; and at least one layer of barrier coating located between the inner layer and the outer layer, wherein the layer of barrier coating has a permeability to oxygen no greater than 10 grams per m2 per day at a temperature of 900°
F. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A coated substrate comprising:
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a substrate; a first layer of dielectric material comprising zinc stannate on the substrate; a first degradable layer comprising silver on at least a portion of the first layer of dielectric material; a first layer of primer comprising titania on at least a portion of the first degradable layer; a second layer of dielectric material comprising zinc stannate applied on at least a portion of the first layer of primer; a second degradable layer comprising silver on at least a portion of the second layer of dielectric material; a second layer of primer comprising titania on at least a portion of the second degradable layer; a third layer of dielectric material comprising zinc stannate on at least a portion of the second layer of primer; a third degradable layer comprising silver on at least a portion of the third layer of dielectric material; and a third layer of primer comprising titania on at least a portion of the third degradable layer; a fourth layer of dielectric material comprising zinc stannate on at least a portion of the third layer of primer; and a layer of barrier coating comprising a mixture, alloy, or combination of alumina and silica sputtered from a target comprising 60 weight percent aluminum and 40 weight percent silicon on at least a portion of the first, second, or third layer of dielectric material, wherein the layer of barrier coating has a permeability to oxygen no greater than 10 grams per m2 per day at a temperature of 900°
F. - View Dependent Claims (46, 47, 48)
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Specification