Heat treatable coated articles with metal nitride layer and methods of making same
First Claim
1. A coated article comprising:
- a layer system supported by a glass substrate, said layer system comprising a metal nitride inclusive layer located between first and second dielectric layers, wherein the second dielectric layer is at least partially nitrided and positioned so that the metal nitride inclusive layer is between the second dielectric layer and the glass substrate; and
wherein said coated article has a transmissive Δ
E*T value no greater than 5.0 after at least about 5 minutes of heat treatment at a temperature(s) of at least about 600 degrees C.
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Accused Products
Abstract
A heat treatable coated article including a solar management layer for reflecting infrared (IR) or the like, is provided between a substrate and an overlying dielectric layer. An underlying dielectric layer between the substrate and solar management layer is optional. In certain embodiments, the solar management layer may include NiCrNx while the dielectric layer(s) may include a nitride such as silicon nitride. By nitriding the solar management layer, it has been found that the resulting coated article is more color stable upon heat treatment (HT). For example, the coated article may have a ΔE* value (transmissive and/or glass side reflective) of no greater than 5.0, more preferably no greater than 4.0, and most preferably no greater than 3.0. Coated articles herein may be used in the context of insulating glass (IG) window units, vehicle windows, or the like.
31 Citations
42 Claims
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1. A coated article comprising:
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a layer system supported by a glass substrate, said layer system comprising a metal nitride inclusive layer located between first and second dielectric layers, wherein the second dielectric layer is at least partially nitrided and positioned so that the metal nitride inclusive layer is between the second dielectric layer and the glass substrate; and
wherein said coated article has a transmissive Δ
E*T value no greater than 5.0 after at least about 5 minutes of heat treatment at a temperature(s) of at least about 600 degrees C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 37, 38)
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15. A coated article comprising:
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a layer system supported by a glass substrate, said layer system comprising a metal nitride inclusive layer located between said glass substrate and an at least partially nitrided dielectric layer, wherein the metal nitride comprises at least one of NiNx and CrNx and contacts said dielectric layer; and
wherein said coated article has a glass side reflective Δ
E*G value no greater than 5.0 in view of thermal tempering including heat treating for at least about 5 minutes. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 39)
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25. A coated article comprising:
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a layer system supported by a glass substrate, said layer system comprising a NiCrNx inclusive layer wherein at least 50% of the Cr is nitrided, said NiCrNx inclusive layer being located between and contacting first and second dielectric layers, wherein the second dielectric layer is at least partially nitrided and positioned so that the NiCrNx inclusive layer is between the second dielectric layer and the glass substrate; and
wherein said coated article has a transmissive Δ
E*T value no greater than 5.0 following or due to heat treatment. - View Dependent Claims (26, 40)
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27. A method of making a coated article, the method comprising:
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providing a glass substrate;
depositing a metal on the substrate in an atmosphere including a significant amount of nitrogen in order to form a metal nitride inclusive layer on the glass substrate;
depositing a dielectric nitride inclusive layer on the substrate over the metal nitride inclusive layer; and
heat treating the article which includes at least the metal nitride inclusive layer and the dielectric nitride inclusive layer for at least 5 minutes, the metal nitride inclusive layer being nitrided to an extent so that after said heat treating the article has a Δ
E value of no greater than 5.0. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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34. A coated article comprising:
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a layer system supported by a glass substrate, said layer system comprising a metal nitride inclusive layer located between first and second dielectric layers, wherein the second dielectric layer is at least partially nitrided and positioned so that the metal nitride inclusive layer is between the second dielectric layer and the glass substrate; and
wherein said coated article has a transmissive Δ
a* value no greater than 1.1 after at least about 5 minutes of heat treatment at temperature of at least about 600 degrees C. - View Dependent Claims (35)
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36. A method of making a coated article, the method comprising:
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providing a glass substrate;
depositing a metal on the substrate in an atmosphere including a significant amount of nitrogen in order to form a metal nitride inclusive layer on the glass substrate;
depositing a dielectric nitride inclusive layer on the substrate over the metal nitride inclusive layer; and
heat treating the article which includes at least the metal nitride inclusive layer and the dielectric nitride inclusive layer for at least 5 minutes, the metal nitride inclusive layer being nitrided to an extent so that after said heat treating the article has a transmissive Δ
a* value of no greater than 1.1.
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41. A coated article comprising:
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a layer system supported by a glass substrate, said layer system comprising a metal nitride inclusive layer located between first and second dielectric layers, wherein the second dielectric layer is at least partially nitrided and positioned so that the metal nitride inclusive layer is between the second dielectric layer and the glass substrate; and
wherein said coated article has a glass side reflective Δ
b*G value no greater than 1.1 after at least about 5 minutes of heat treatment at temperature of at least about 600 degrees C. - View Dependent Claims (42)
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Specification