Nickel-aluminum blocker film low-emissivity coatings

Patent metadata

Field	Value
Publication number	US-2016356931-A1
Application number	US-201615241593-A
Country	US
Kind code	A1
Filing date	Aug 19, 2016
Priority date	Mar 20, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

The invention provides a glazing sheet and a low-emissivity coating on the glazing sheet. The low-emissivity coating comprises, in sequence moving outwardly from the glazing sheet, a layer comprising oxide film, nitride film, or oxynitride film, an infrared-reflective film, a nickel-aluminum blocker film, and an oxide film. Also provided are methods of depositing such a low-emissivity coating.

First claim

What is claimed is:

1 . A glazing sheet and a low-emissivity coating on the glazing sheet, the low-emissivity coating comprising, in sequence moving outwardly from the glazing sheet, a layer comprising oxide film, nitride film, or oxynitride film, a metallic infrared-reflective film, a nickel-aluminum blocker film, a titanium-containing film and an oxide film, the nickel-aluminum blocker film being in contact with the infrared-reflective film, the titanium-containing film being in contact with the nickel-aluminum blocker film and the oxide layer being in contact with the titanium-containing film.

2 . The glazing sheet and low-emissivity coating of claim 1 wherein the titanium-containing film comprises a titanium sub-oxide film.

3 . The glazing sheet and low-emissivity coating of claim 1 wherein the titanium-containing film comprises titanium dioxide.

4 . The glazing sheet and low-emissivity coating of claim 1 wherein the titanium-containing film comprises metallic titanium.

5 . The glazing sheet and low-emissivity coating of claim 1 wherein the titanium-containing film has an outer interface and an inner interface, wherein the outer interface comprises titanium dioxide while the inner interface comprises metallic titanium and/or titanium sub-oxide.

6 . The glazing sheet and low-emissivity coating of claim 1 wherein the nickel-aluminum blocker film has an outer interface and an inner interface, the outer interface adheres to the titanium-containing film while the inner interface adheres to the metallic infrared-reflective film, and wherein the outer interface of the nickel-aluminum blocker film comprises aluminum oxide while the inner interface of the nickel-aluminum blocker film comprises metallic nickel.

7 . The glazing sheet and low-emissivity coating of claim 1 wherein the nickel-aluminum blocker film is devoid of metals other than nickel and aluminum.

8 . The glazing sheet and low-emissivity coating of claim 1 wherein the nickel-aluminum blocker film contains more than 7.5% aluminum by weight.

9 . The glazing sheet and low-emissivity coating of claim 1 wherein the nickel-aluminum blocker film contains less than 30% aluminum by weight.

10 . The glazing sheet and low-emissivity coating of claim 1 wherein the nickel-aluminum blocker film has a thickness of between 10 angstroms and 80 angstroms.

11 . The glazing sheet and low-emissivity coating of claim 1 wherein the glazing sheet is a glass pane having a thickness in the range of 2 mm to 5 mm.

12 . The glazing sheet and low-emissivity coating of claim 11 wherein the glass pane is soda-lime glass.

13 . The glazing sheet and low-emissivity coating of claim 15 wherein the infrared-reflective film is at least 50% silver by weight.

14 . A glazing sheet and a low-emissivity coating on the glazing sheet, the low-emissivity coating comprising, in sequence moving outwardly from the glazing sheet, a layer comprising oxide film, nitride film, or oxynitride film, a metallic infrared-reflective film, a nickel-aluminum blocker film and an oxide film, the nickel-aluminum blocker film being in contact with the infrared-reflective film and the oxide layer being in contact with the nickel-aluminum blocker film, wherein the nickel-aluminum blocker film is deposited as a film consisting essentially of nickel, aluminum and titanium.

15 . The glazing sheet and low-emissivity coating of claim 14 wherein the nickel-aluminum blocker film has a thickness of between 10 angstroms and 80 angstroms.

16 . The glazing sheet and low-emissivity coating of claim 14 wherein the low-emissivity coating has two or more nickel-aluminum blocker films, one of the nickel-aluminum blocker films being at least 20% thicker than another of the nickel-aluminum blocker films.

17 . The glazing sheet and low-emissivity coating of claim 14 wherein the low-emissivity coating has only two nickel-aluminum blocker films, and wherein a first of the two nickel-aluminum blocker films is located closer to the glazing sheet than is a second of the two nickel-aluminum blocker films, the first nickel-aluminum blocker film being more than 20% thicker than the second nickel-aluminum blocker film.

18 . The glazing sheet and low-emissivity coating of claim 14 wherein the low-emissivity coating includes three nickel-aluminum blocker films, and wherein a first of the nickel-aluminum blocker films is located closer to the glazing sheet than is a second of the nickel-aluminum blocker films, the second nickel-aluminum blocker film being located closer to the glazing sheet than is a third of the nickel-aluminum blocker films, the second and third nickel-aluminum blocker films each being between 50% and 300% thicker than the first nickel-aluminum blocker film.

19 . The glazing sheet and low-emissivity coating of claim 18 wherein the first nickel-aluminum blocker film has a thickness of between 10 and 40 angstroms, the second and third nickel-aluminum blocker films each having a thickness between 10 and 60 angstroms.

20 . The glazing sheet and low-emissivity coating of claim 14 wherein the glazing sheet is a glass pane having a thickness in the range of 2 mm to 5 mm.

21 . The glazing sheet and low-emissivity coating of claim 20 wherein the glass pane is soda-lime glass.

22 . The glazing sheet and low-emissivity coating of claim 14 wherein the infrared-reflective film is at least 50% silver by weight.

23 . A glazing sheet and a low-emissivity coating on the glazing sheet, the low-emissivity coating comprising, in sequence moving outwardly from the glazing sheet, a base coat comprising at least one transparent dielectric film, a first infrared-reflective film, a first nickel-aluminum blocker film, a middle coat comprising at least one transparent dielectric film, a second infrared-reflective film, a second nickel-aluminum blocker film, and a top coat comprising at least one transparent dielectric film, wherein the second infrared-reflective film is thicker than the first infrared-reflective film, in combination with the first nickel-aluminum blocker film being thicker than the second nickel-aluminum blocker film, wherein the nickel-aluminum blocker film is deposited as a film consisting essentially of nickel, aluminum and titanium.

24 . The glazing sheet and low-emissivity coating of claim 23 wherein the first nickel-aluminum blocker film is at least 50% thicker than the second nickel-aluminum blocker film.

25 . The glazing sheet and low-emissivity coating of claim 24 wherein the first nickel-aluminum blocker film is at least 75% thicker than the second nickel-aluminum blocker film.

26 . The glazing sheet and low-emissivity coating of claim 23 wherein the first and second nickel-aluminum blocker films have a combined thickness of greater than 60 angstroms.

27 . The glazing sheet and low-emissivity coating of claim 26 wherein the first and second nickel-aluminum blocker films have a combined thickness of from 20-150 angstroms.

28 . The glazing sheet and low-emissivity coating of claim 23 wherein the first nickel-aluminum blocker film is in contact with the first infrared-reflective film, the middle coat comprises an oxide layer in contact with the first nickel-aluminum blocker film, the second nickel-aluminum blocker film is in contact with the second infrared-reflective film, and the top coat comprises an oxide layer in conta

Assignees

• Cardinal Cg Co

Inventors

• Myli Kari B
• Pfaff Gary L
• Plaggemeyer Daniel J

Classifications

• G02B1/11

  Anti-reflection coatings · CPC title

• G02B5/208 Primary

  for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation · CPC title

• C03C17/36 Primary

  at least one coating being a metal · CPC title

• C23C14/35

  by application of a magnetic field, e.g. magnetron sputtering {(C23C14/3457 takes precedence)} · CPC title

• C03C17/3694

  one layer having a composition gradient through its thickness · CPC title