Coated article with removable protective coating and related methods
View Patent ↗A coated article is disclosed. The coated article of the invention includes a substrate having a surface and a removable protective coating comprising up to 100 weight percent of a carbon-containing material deposited over at least a portion of the substrate, where the weight percentages are based on the total weight of the removable protective coating.
1. A coated substrate, comprising:
a substrate having a surface; and
a removable protective coating comprised predominantly of a crystalline or amorphous carbon-containing material deposited over at least a portion of the substrate; and
a functional coating deposited over the substrate, wherein the functional coating is between the substrate and the removable protective coating.
2. The coated substrate according to claim 1 , wherein the removable protective coating comprises at least 75 weight percent carbon.
3. The coated substrate according to claim 1 , the removable protective coating has a thickness ranging up to 10 microns.
4. The substrate according to claim 3 , the removable protective coating has a thickness ranging up to 3000 Å.
5. The substrate according to claim 1 , wherein the substrate is selected from untempered glass, tempered glass, and heat-strengthened glass.
6. The substrate according to claim 1 , wherein the functional coating comprises a low emissivity coating.
7. The substrate according to claim 1 , further comprising a blocking layer over the functional coating, wherein the blocking layer is between the functional coating and the removable protective coating.
8. The substrate according to claim 7 , wherein the blocking layer is selected from oxides, nitrides, oxynitrides of silicon, titanium, zirconium, niobium, aluminum, and mixtures thereof.
9. The substrate according to claim 7 , wherein the blocking layer has a thickness ranging up to 50 microns.
10. The substrate according to claim 9 , wherein the blocking layer has a thickness ranging from 25 Å to 500 Å.
11. The substrate according to claim 1 , wherein the protective coating is a sputter deposited coating.
12. A coated substrate, comprising:
a glass substrate having a surface;
a low emissivity coating formed over at least a portion of the substrate surface; and
a protective coating sputter deposited over at least a portion of the low emissivity coating, the protective coating comprising crystalline or amorphous carbon.
13. The substrate according to claim 12 , further comprising a blocking layer positioned between the low emissivity coating and the protective coating.
14. The substrate according to claim 13 , wherein the blocking layer comprises a material selected from the group consisting of oxides, nitrides, or oxynitrides of silicon, titanium, zirconium, niobium, aluminum, and mixtures thereof.