Reflective or Semi-Reflective Metal Alloy Coatings

• US 20070172625A1
• Filed: 01/04/2007
• Published: 07/26/2007
• Est. Priority Date: 07/08/2002
• Status: Abandoned Application

• Current Assignee: Target Technology Company LLC
• Original Assignee: Target Technology Company LLC
• Inventors: Wityak, George, Ridout, James
• Application Number:
  US11/620,025
• Publication Number:
  US 20070172625A1
• Time in Patent Office: Days
• US Class Current: 428/64.400
• CPC Class Codes: C03C 17/3647 in combination with other metals, silver being more than 50%
• CPC Class Codes: C03C 17/366 Low-emissivity or solar control coatings
• CPC Class Codes: C22C 9/06 with nickel or cobalt as the next major constituent
• CPC Class Codes: C22C 9/08 with lead as the next major constituent
• CPC Class Codes: C23C 14/14 Metallic material, boron or silicon
• CPC Class Codes: C25D 7/08 Mirrors; Reflectors
• CPC Class Codes: G03G 7/0006 Cover layers for image-receiving members; Strippable coversheets
• CPC Class Codes: G03G 7/0046 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: G03G 7/0086 Back layers for image-receiving members; Strippable backsheets
• CPC Class Codes: G11B 7/258 of reflective layers
• CPC Class Codes: G11B 7/259 based on silver
• CPC Class Codes: G11B 7/266 Sputtering or spin-coating layers sputtering in general C23C14/24; spin-coating in general B05D1/005

Abstract

A silver-based alloy composition for use as a reflective or semi-reflective coatings or layer(s) for use in optical data storage media, low emissivity glass, transparent conductive displays, and electro-chromic mirrors, or other reflective or semi-reflective applications. The alloy composition comprises silver with copper and/or zinc and silicon and/or tin.

Claims

1. An optical storage medium having a reflective or semi-reflective coating, said coating comprising an alloy, said alloy comprising:

(a) silver in an amount of between approximately 45% by weight and approximately 99.9% by weight;

(b) copper in an amount of between approximately 0.01% by weight and approximately 55% by weight;

(c) zinc in an amount of between approximately 0.01% by weight and approximately 55% by weight, and

(d) tin in an amount of between approximately 0.01% by weight and approximately 30% by weight; and

wherein said copper is present in said alloy in an amount greater than about 5.0 atomic percent.

2. The optical storage medium of claim 1, wherein said amount of said copper is between approximately 0.01% by weight and approximately 10% by weight.

3. The optical storage medium of claim 1, wherein said amount of said copper is between approximately 0.25% by weight and approximately 5% by weight.

4. An optical storage medium having a reflective or semi-reflective coating, said coating comprising an alloy, said alloy comprising:

(a) silver in an amount of between approximately 45% by weight and approximately 99.9% by weight;

(b) copper in an amount of between approximately 0.01% by weight and approximately 55% by weight;

(c) zinc in an amount of between approximately 0.01% by weight and approximately 55% by weight, and

(d) silicon in an amount of between approximately 0.01% by weight and approximately 30% by weight; and

wherein said copper is present in said alloy in an amount greater than about 5.0 atomic percent.

5. The optical storage medium of claim 4, wherein said amount of said copper is between approximately 0.01% by weight and approximately 10% by weight.

6. The optical storage medium of claim 4, wherein said amount of said copper is between approximately 0.25% by weight and approximately 5% by weight.

7. An optical storage medium having a reflective or semi-reflective coating, said coating comprising an alloy, said alloy comprising:

(a) silver in an amount of between approximately 45% by weight and approximately 99.9% by weight;

(b) copper in an amount of between approximately 0.01% by weight and approximately 55% by weight; and

(c) at least one metal selected from the group consisting of silicon and tin in an amount of between approximately 0.01% by weight and 30% by weight; and

wherein said copper is present in said alloy in an amount greater than about 5.0 atomic percent.

8. The optical storage medium of claim 7, wherein said amount of said copper is between approximately 0.01% by weight and approximately 10% by weight.

9. The optical storage medium of claim 7, wherein said amount of said copper is between approximately 0.25% by weight and approximately 5% by weight.