초록 ▼

An article includes a substrate, a functional coating deposited over the substrate, and a protective coating deposited over the functional coating. The functional coating and the protective coating define a coating stack. The protective coating provides the coating stack with an emissivity value hig

An article includes a substrate, a functional coating deposited over the substrate, and a protective coating deposited over the functional coating. The functional coating and the protective coating define a coating stack. The protective coating provides the coating stack with an emissivity value higher than the emissivity value of the functional coating alone. The protective coating can have a thickness in the range of greater than 100 Å to less than or equal to 10 microns and a refractive index in the range of 1.4 to 2. The protective coating can include a first layer formed over the functional coating and a second layer formed over the first layer. The first layer can include 50 wt. % to 100 wt. % alumina and 50 wt. % to 0 wt. % silica, and the second layer can include 50 wt. % to 100 wt. % silica and 50 wt. % to 0 wt. % alumina. An alternating current power supply and cathode target system includes a cathode target including aluminum in the range of 5 wt. % to 100 wt. % and silicon in the range of 0 wt. % to 95 wt. %.

대표청구항 ▼

1. An article, comprising:a substrate; a functional coating deposited over at least a portion of the substrate; and a protective coating deposited over at least a portion of the functional coating, wherein the functional coating and the protective coating define a coating stack, wherein the protecti

1. An article, comprising:a substrate; a functional coating deposited over at least a portion of the substrate; and a protective coating deposited over at least a portion of the functional coating, wherein the functional coating and the protective coating define a coating stack, wherein the protective coating provides the coating stack with an emissivity higher than the emissivity of the functional coating alone, wherein the protective coating has a thickness in the range of greater than 100 Å to less than or equal to 10 microns and the protective coating has a refractive index in the range of 1.4 to 2, and wherein the protective coating comprises a first layer formed over at least a portion of the functional coating and a second layer formed over at least a portion of the first layer, wherein the first layer comprises 50 wt. % to 99 wt. % alumina and 50 wt. % to 1 wt. % silica, and the second layer comprises 50 wt. % to 99 wt. % silica and 50 wt. % to 1 wt. % alumina. 2. The article of claim 1, wherein the article is a motor vehicle transparency.3. The article of claim , wherein the first layer comprises 70 wt. % to 99 wt. % alumina and 30 wt. % to 1 wt. % silica.4. The article of claim 1, wherein the first layer has a thickness in the range of 50 Å to 1 micron.5. The article of claim 1, wherein the first layer has a thickness in the range of 100 Å to 250 Å.6. The article of claim 1, wherein the second layer comprises 70 wt. % to 99 wt. % silica and 30 wt. % to 1 wt. % alumina.7. The article of claim 1, wherein the second layer has a thickness in the range of 50 Å to 2,000 Å.8. The article of claim 1, wherein the second layer has a thickness in the range of 300 Å to 500 Å.9. A monolithic transparency, comprising:a glass substrate; a functional coating deposited over at least a portion of the glass substrate; and a protective coating deposited over at least a portion of the functional coating to form a coating stack, the protective coating comprising aluminum oxide having a thickness in the range of 1 micron to 10 microns, and wherein the protective coating comprises a first layer formed over at least a portion of the functional coating and a second layer formed over at least a portion of the first layer, wherein the first layer comprises 50 wt. % to 99 wt. % alumina and 50 wt % to 1 wt. % silica, and the second layer comprises 50 wt % to 99 wt. % silica and 50 wt. % to 1 wt. % alumina. 10. An article, comprising:a substrate; at least one solar infrared reflective dielectric functional coating deposited over at least a portion of the substrate; and a protective coating deposited over at least a portion of the functional coating, wherein the protective coating has a thickness in the range of greater than 100 Å to less than 10 microns and has a refractive index in the range of 1.4 to 1.8, and wherein the protective coating comprises a first layer formed over at least a portion of the functional coating and a second layer formed over at least a portion of the first layer, wherein the first layer comprises 50 wt. % to 99 wt. % alumina and 50 wt. % to 1 wt. % silica, and the second layer comprises 50 wt. % to 99 wt. % silica and 50 wt. % to 1 wt. % alumina.