Claims
- 1. A reflective film comprising a composite structure, which comprises: i) an Ag substrate; and ii) a protective film of an Ag--Mg alloy with an Mg content of from 1 to 10 atomic % formed on the surface of said Ag substrate, prepared by a process of oxidizing a surface part of said protective film of said Ag--Mg alloy to form an MgO layer on an external surface of said protective film wherein Mg is diffused from a surface of said Ag--Mg alloy opposite to an interface between said Ag surface and said Ag--Mg alloy wherein said protective film has a thickness of 50 .ANG. or more.
- 2. The reflective film of claim 1, further comprising an under-coat contiguous to a surface of said Ag substrate which is opposite to a surface of said protective film.
- 3. The reflective film of claim 1, further comprising an over-coat contiguous to a surface of said protective film which is opposite to a surface of said Ag substrate.
- 4. The reflective film of claim 1, wherein said corrosion-resistant composition is formed on a surface of a substrate board.
- 5. The reflective film of claim 1, wherein said Ag substrate is in the form of a film.
- 6. The reflective film of claim 1, wherein said Ag substrate has a thickness of 500 .ANG. or more.
- 7. The reflective film of claim 1, wherein said Ag substrate and said protective film are contiguous.
- 8. The reflective film of claim 1, wherein said Ag substrate and said protective are continuously contiguous.
- 9. A photo-magnetic recording media comprising: 1) a recording layer; and 2) a corrosion-resistant composite structure, which comprises: i) an Ag substrate; and ii) a protective film of an Ag--Mg alloy with an Mg content of from 1 to 8 atomic % formed on the surface of said Ag substrate, prepared by a process of
- oxidizing a surface part of said protective film of said Ag--Mg alloy to form an MgO layer on an external surface of said protective film wherein Mg is diffused from a surface of said Ag--Mg alloy opposite to an interface between said Ag surface and said Ag--Mg alloy
- wherein said protective film has a thickness of 50 .ANG. or more.
- 10. An optical recording medium comprising a corrosion-resistant composite which comprises: i) an Ag substrate; and ii) a protective film of an Ag--Mg alloy with an Mg content of from 1 to 5 atomic % formed on the surface of said Ag substrate, prepared by a process of
- oxidizing a surface part of said protective film of said Ag--Mg alloy to form an MgO layer on an external surface of said protective film wherein Mg is diffused from a surface of said Ag--Mg alloy opposite to an interface between said Ag surface and said Ag--Mg alloy
- wherein said protective film has a thickness of 50 .ANG. or more.
- 11. A reflector comprising a corrosion-resistant composite which comprises: i) an Ag substrate; and ii) a protective film of an Ag--Mg alloy with an Mg content of from 1 to 5 atomic % formed on the surface of said Ag substrate, prepared by a process of
- oxidizing a surface part of said protective film of said Ag--Mg alloy to form an MgO layer on an external surface of said protective film wherein Mg is diffused from a surface of said Ag--Mg alloy opposite to an interface between said Ag surface and said Ag--Mg alloy
- wherein said protective film has a thickness of 50 .ANG. or more.
- 12. An illuminator comprising a corrosion-resistant composite which comprises: i) an Ag substrate; and ii) a protective film of an Ag--Mg alloy with an Mg content of from 1 to 5 atomic % formed on the surface of said Ag substrate, prepared by a process of
- oxidizing a surface part of said protective film of said Ag--Mg alloy to form an MgO layer on an external surface of said protective film wherein Mg is diffused from a surface of said Ag--Mg alloy opposite to an interface between said Ag surface and said Ag--Mg alloy
- wherein said protective film has a thickness of 50 .ANG. or more.
- 13. A sign comprising a corrosion-resistant composite which comprises: i) an Ag substrate; and ii) a protective film of an Ag--Mg alloy with an Mg content of from 1 to 5 atomic % formed on the surface of said Ag substrate, prepared by a process of
- oxidizing a surface part of said protective film of said Ag--Mg alloy to form an MgO layer on an external surface of said protective film wherein Mg is diffused from a surface of said Ag--Mg alloy opposite to an interface between said Ag surface and said Ag--Mg alloy
- wherein said protective film has a thickness of 50 .ANG. or more.
- 14. A plating film for plastic products, which comprises a corrosion-resistant composite which comprises: i) an Ag substrate; and ii) a protective film of an Ag--Mg alloy with an Mg content of from 1 to 10 atomic % formed on the surface of said Ag substrate, prepared by a process of
- oxidizing a surface part of said protective film of said Ag--Mg alloy to form an MgO layer on an external surface of said protective film wherein Mg is diffused from a surface of said Ag--Mg alloy opposite to an interface between said Ag surface and said Ag--Mg alloy
- wherein said protective film has a thickness of 50 .ANG. or more.
Priority Claims (1)
Number |
Date |
Country |
Kind |
6-203875 |
Aug 1994 |
JPX |
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Parent Case Info
This is a Division, of application Ser. No. 08/519,025 filed on Aug. 24, 1995, now U.S. Pat. No. 5,630,886.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
5076663 |
Arendt |
Dec 1991 |
|
5284527 |
Smeggil |
Feb 1994 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
519025 |
Aug 1995 |
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