Low reflectance bronze coating

• US 4,847,158 A
• Filed: 05/15/1987
• Issued: 07/11/1989
• Est. Priority Date: 05/15/1987
• Status: Expired due to Term

• Current Assignee: PPG Industries Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Incorporated (Nouryon BV)
• Inventors: Gillery, Frank H.
• Primary Examiner(s): Swisher, Nancy A. B.
• Application Number:
  US07/050,825
• Time in Patent Office: 788 Days
• Field of Search: 428/434, 428/621, 428/627, 428/632, 428/672, 428/651, 428/433, 428/432
• US Class Current: 428/433
• CPC Class Codes: C03C 17/36 at least one coating being a metal
• CPC Class Codes: C03C 17/3607 Coatings of the type glass/inorganic compound/metal
• CPC Class Codes: C03C 17/3649 made of metals other than silver
• CPC Class Codes: C03C 17/366 Low-emissivity or solar control coatings
• CPC Class Codes: C03C 17/3681 the multilayer coating being used in glazing, e.g. windows or windscreens
• CPC Class Codes: C23C 14/0015 characterized by the colour of the layer
• CPC Class Codes: C23C 14/083 of refractory metals or yttrium
• CPC Class Codes: C23C 14/085 of iron group metals
• CPC Class Codes: C23C 14/18 on other inorganic substrates
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation

Abstract

A transparent article for reflecting solar energy comprising a metal alloy oxide film which exhibits color and a low reflectance metal alloy film is disclosed along with a sputtering method for its production.

Claims

1. An article of manufacture for the reflectance of solar energy comprising:

a. a transparent substrate;

b. a transparent film of a metal alloy oxide at a thickness which exhibits color deposited on a surface of said substrate; and

c. a neutral low reflectance transparent metal alloy film deposited on said metal oxide film said films in combination providing a coated article with low transmittance and low reflectance.

2. An article of manufacture according to claim 1, wherein the substrate is glass.

3. An article of manufacture according to claim 2, wherein the low reflectance metal alloy film comprises an alloy of a metal selected from the group consisting of nickel and chromium.

9. An article according to claim 1, wherein said transparent films of metal alloy oxide and low reflectance metal are sputtered films.

4. An article of manufacture for the reflectance of solar energy comprisng:

a. a transparent substrate;

b. a transparent film of an iron alloy oxide at a thickness which exhibits color; and

c. a transparent, low reflectance, neutral low transmittance nickel alloy film.

5. An article according to claim 4, wherein said nickel alloy comprises nickel, chromium, and iron.

6. An article according to claim 4, wherein said iron alloy oxide film comprises stainless steel oxide.

7. An article according to claim 6, wherein the stainless steel comprises iron, chromium, nickel and molybdenum.

8. An article according to claim 7, wherein said article exhibits a bronze color in reflectance from the glass surface.