US5096508A
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Surface modified copper alloys
Assignee: Olin Corp
•
Filing: 1990-07-27
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Granted: 1992-03-17
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Expires: 2010-07-27
Abstract
Abstract A composite copper alloy having a modified surface is provided. An element or combination of elements both soluble in copper and reactive with nitrogen are cast with copper or a copper alloy forming a solid state solution. The alloy is reacted with a nitride former to modify the surface. A continuous surface film is formed by heating in a nitrogen containing gas. A dispersion of nitride precipitate in a copper matrix is formed by implanting nitrogen ions.
Inventors
- 👤 John F. Breedis
- 👤 George J. Muench
- 👤 Deepak Mahulikar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:16
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/48; C23C8/00; C23C8/80; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12882
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
48 words
A composite copper alloy, comprising: a core having the formula CuQ; and a surface layer having the formula CuQN and a thickness of from about 10 angstroms to about 1 micron where Q is an element or combination of elements both soluble in copper and reactive with nitrogen.
Claim 2
Dependent Claim
48 words
A composite copper alloy, comprising: a core having the formula CuQ; and a surface layer having the formula CuQN and a thickness of from about 10 angstroms to about 1 micron where Q is an element or combination of elements both soluble in copper and reactive with nitrogen.
Claim 3
Dependent Claim
24 words
The composite copper alloy of claim 1 wherein Q is selected from the group consisting of titanium, aluminum, chromium, zirconium, silicon and mixtures thereof.
Claim 4
Dependent Claim
20 words
The composite alloy of claim 2 wherein the concentration of Q is from about 1 to about 10 weight percent.
Claim 5
Dependent Claim
20 words
The composite alloy of claim 3 wherein the concentration of Q is from about 3 to about 6 weight percent.
Claim 6
Dependent Claim
20 words
The composite alloy of claim 3 wherein said surface layer comprises a dispersion of QN precipitate in a copper matrix.
Claim 7
Dependent Claim
21 words
The composite alloy of claim 5 wherein the thickness of said surface layer is from about 0.01 to about 0.5 microns.
Claim 8
Dependent Claim
20 words
The composite alloy of claim 5 wherein said precipitate has an average cross-sectional dimension of less than about 3 microns.
Claim 9
Dependent Claim
10 words
The composite alloy of claim 7 wherein Q is aluminum.
Claim 10
Dependent Claim
10 words
The composite alloy of claim 7 wherein Q is titanium.
Claim 11
Dependent Claim
53 words
A composite copper alloy, comprising: a core having the formula CuXQ; and a surface layer having a formula CuXQN where X is an element or combination of elements soluble in copper and essentially nonreactive with nitrogen and Q is an element or combination of elements both soluble in copper and reactive with nitrogen.
Claim 12
Dependent Claim
53 words
A composite copper alloy, comprising: a core having the formula CuXQ; and a surface layer having a formula CuXQN where X is an element or combination of elements soluble in copper and essentially nonreactive with nitrogen and Q is an element or combination of elements both soluble in copper and reactive with nitrogen.
Claim 13
Dependent Claim
41 words
The composite alloy of claim 10 wherein Q is selected from the group consisting of titanium, aluminum, chromium, silicon, zirconium and mixtures thereof and X is selected from the group consisting of zinc, nickel, tin, cobalt, iron, manganese and mixtures thereof.
Claim 14
Dependent Claim
21 words
The composite copper alloy of claim 11 wherein said surface layer is a dispersion of QN precipitate in a CuX matrix.
Claim 15
Dependent Claim
20 words
The composite alloy of claim 12 wherein said precipitate has an average cross-sectional dimension of less than about 3 microns.
Claim 16
Dependent Claim
10 words
The composite alloy of claim 13 wherein Q is aluminum.
Claim 17
Dependent Claim
10 words
The composite alloy of claim 13 wherein Q is titanium.
Claim 18
Dependent Claim
49 words
A composite copper alloy, comprising: a core having the formula CuQ; and a surface layer having the formula QN and a thickness of from about 10 angstroms to about 1 micron where Q is an element or a combination of elements both soluble in copper and reactive with nitrogen.
Claim 19
Dependent Claim
49 words
A composite copper alloy, comprising: a core having the formula CuQ; and a surface layer having the formula QN and a thickness of from about 10 angstroms to about 1 micron where Q is an element or a combination of elements both soluble in copper and reactive with nitrogen.
Claim 20
Dependent Claim
24 words
The composite copper alloy of claim 16 wherein Q is selected from the group consisting of titanium, aluminum, chromium, zirconium, silicon and mixtures thereof.
Claim 21
Dependent Claim
20 words
The composite alloy of claim 17 wherein the concentration of Q is from about 1 to about 10 weight percent.
Claim 22
Dependent Claim
20 words
The composite alloy of claim 18 wherein the concentration of Q is from about 3 to about 6 weight percent.
Claim 23
Dependent Claim
15 words
The composite alloy of claim 18 wherein said QN surface layer is a continuous film.
Claim 24
Dependent Claim
21 words
The composite alloy of claim 20 wherein the thickness of said QN film is from about 0.1 to about 0.5 microns.
Claim 25
Dependent Claim
10 words
The composite alloy of claim 20 wherein Q is titanium.
Claim 26
Dependent Claim
10 words
The composite alloy of claim 20 wherein Q is aluminum.
Claim 27
Dependent Claim
53 words
A composite copper alloy, comprising: a core having the formula CuXQ; and a surface layer having a formula QN where X is an element or combination of elements soluble in copper and essentially nonreactive with nitrogen and Q is an element or combination of elements both soluble in copper and reactive with nitrogen.
Claim 28
Dependent Claim
53 words
A composite copper alloy, comprising: a core having the formula CuXQ; and a surface layer having a formula QN where X is an element or combination of elements soluble in copper and essentially nonreactive with nitrogen and Q is an element or combination of elements both soluble in copper and reactive with nitrogen.
Claim 29
Dependent Claim
41 words
The composite alloy of claim 24 wherein Q is selected from the group consisting of titanium, aluminum, chromium, silicon, zirconium and mixtures thereof and X is selected from the group consisting of zinc, nickel, tin, cobalt, iron, manganese and mixtures thereof.
Claim 30
Dependent Claim
18 words
The composite alloy of claim 25 wherein said surface layer is a continuous film having the composition QN.
Claim 31
Dependent Claim
22 words
The composite alloy of claim 26 wherein said surface layer has a thickness of from about 0.1 microns to about 0.5 microns.
Claim 32
Dependent Claim
10 words
The composite alloy of claim 26 wherein Q is titanium.
Claim 33
Dependent Claim
10 words
The composite alloy of claim 26 wherein Q is aluminum.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-17 | 1995-09-16 | 1996-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-17 | 1999-09-16 | 2000-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-17 | 2003-09-16 | 2004-03-17 | $7700.00 | Window Closed / Lapsed |