Heat treatable coated article with niobium chromium nitride IR reflecting layer and method of making same
AssigneeGuardian Industries Corp.
InventorGrzegorz Stachowiak
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Abstract
A coated article is provided so as to include a solar control coating having an infrared (IR) reflecting layer sandwiched between at least a pair of dielectric layers. The IR reflecting layer includes NbCr and/or NbCrNx in certain embodiments of this invention. The use of such materials as an IR reflecting layer(s) enables the coated article to have good corrosion resistance to alkaline solutions, good mechanical performance such as scratch resistance, and/or good color stability (i.e., a low ΔE* value(s)) upon heat treatment (HT). The coated article may be heat treated (e.g., thermally tempered) in certain example embodiments of the invention.
Claims46
A coated article including a layer system supported by a glass substrate, the layer system comprising:
- a first layer comprising silicon nitride;
- a layer comprising niobium chromium nitride provided on the glass substrate over the first layer comprising silicon nitride;
- a second layer comprising silicon nitride provided on the glass substrate over the layer comprising niobium chromium nitride;
- and
- wherein the layer comprising niobium chromium nitride is sandwiched between and contacts each of the first and second layers comprising silicon nitride.
A coated article including a layer system supported by a glass substrate, the layer system comprising:
- a first dielectric layer;
- a layer comprising niobium chromium (NbCr) provided on the glass substrate over the first dielectric layer;
- a second dielectric layer provided on the glass substrate over the layer comprising niobium chromium;
- and
- wherein the layer comprising niobium chromium is sandwiched between and contacts each of the first and second dielectric layers.
A coated article including a coating supported by a glass substrate, the coating comprising:
- a first dielectric layer;
- a layer comprising NbCr and/or a nitride of NbCr;
- a second dielectric layer, wherein said layer comprising NbCr and/or a nitride of NbCr is located between at least the first and second dielectric layers;
- and
- wherein said layer comprising NbCr and/or a nitride of NbCr does not contact any metallic infrared (IR) reflecting layer of Ag.
A coated article including a coating supported by a glass substrate, the coating comprising:
- a first dielectric layer;
- a layer comprising a nitride of NbCr;
- a second dielectric layer, wherein said layer comprising the a nitride of NbCr is located between at least the first and second dielectric layers.
A method of making a coated article, the method comprising:
- providing a glass substrate;
- sputtering a first dielectric layer on the glass substrate;
- sputtering a layer comprising NbCr on the glass substrate over the first dielectric layer;
- sputtering a second dielectric layer on the glass substrate over the layer comprising NbCr, so that the layer comprising NbCr is located between at least the first and second dielectric layers;
- and
- wherein the layer comprising NbCr is not in contact with any layer of Ag.
A coated article including a layer system supported by a glass substrate, the layer system comprising:
- a layer comprising niobium chromium (NbCr) provided on the glass substrate;
- a dielectric layer provided on the glass substrate over the layer comprising niobium chromium.
Dependencies are inferred from the claim text.