US4495252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear-resistant metallic article
Assignee: Clevite Industries Inc
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Filing: 1980-01-16
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Granted: 1985-01-22
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Expires: 2000-01-16
Abstract
Abstract A wear-resistant metallic article is provided which comprises a metallic substrate, a barrier layer of a metal selected from the group consisting of nickel, alloys of nickel, copper and alloys of copper on a surface of the metallic substrate and a layer of wear-resistant material bonded to the substrate, with the wear-resistant material including a mixture of nickel aluminide in a copper base matrix. A method is provided for producing the above-described wear-resistant metallic article which method comprises the steps of (a) providing a metallic substrate, (b) affixing a barrier layer of a metal selected from the group consisting of nickel, alloys of nickel, copper and alloys of copper to a surface of the metallic substrate, (c) applying a layer of wear-resistant material over the surface of the barrier layer, with the wear-resistant material including a mixture of nickel aluminide in a copper base matrix, (d) sintering the so-applied wear-resistant material at a temperature sufficient to cause it to become bonded to the substrate, (e) compacting the sintered article an amount sufficient to cause it to have a density near theoretical, and (f) re-sintering the compacted article at a temperature sufficient to cause the wear-resistant material to become bonded together and to the substrate.
Inventors
- 👤 James W. O'Brien
- 👤 Frank Spevak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:15
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/02; B22F7/04; B32; B32B; B32B15/00; B32B15/01; B32B15/013; B32B15/015; C; C23; C23C; C23C28/00; C23C28/02; C23C28/023; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/902; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12069; Y10T428/12076
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
151 words
A method of producing a metallic substrate having bonded thereto a wear-resistant surface containing nickel aluminide in a copper base matrix with lead which process comprises the steps of: (a) providing a metallic substrate; (b) affixing a barrier layer of a metal selected from the group consisting of nickel, alloys of nickel, copper and alloys of copper to a surface of the metallic substrate; (c) applying a layer of wear-resistant material over the surface of said barrier layer, with said wear-resistant material including a mixture of nickel aluminide and a copper base alloy; (d) sintering said so-applied wear-resistant material at a temperature sufficient to cause it to become bonded to said substrate; (e) compacting the sintered layer an amount sufficient to cause it to have a density near theoretical; and (f) re-sintering said article at a temperature sufficient to cause the wear-resistant material to become bonded together and to the substrate.
Claim 2
Independent Claim
151 words
A method of producing a metallic substrate having bonded thereto a wear-resistant surface containing nickel aluminide in a copper base matrix with lead which process comprises the steps of: (a) providing a metallic substrate; (b) affixing a barrier layer of a metal selected from the group consisting of nickel, alloys of nickel, copper and alloys of copper to a surface of the metallic substrate; (c) applying a layer of wear-resistant material over the surface of said barrier layer, with said wear-resistant material including a mixture of nickel aluminide and a copper base alloy; (d) sintering said so-applied wear-resistant material at a temperature sufficient to cause it to become bonded to said substrate; (e) compacting the sintered layer an amount sufficient to cause it to have a density near theoretical; and (f) re-sintering said article at a temperature sufficient to cause the wear-resistant material to become bonded together and to the substrate.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein the metallic substrate is fabricated from steel.
Claim 4
Dependent Claim
35 words
The method of claim 1 wherein said barrier layer is composed of a metal selected from the group consisting of nickel and alloys of nickel and has a thickness of greater than about 0.0005 inch.
Claim 5
Dependent Claim
35 words
The method of claim 1 wherein said barrier layer is composed of a metal selected from the group consisting of copper and alloys of copper and has a thickness of greater than about 0.002 inch.
Claim 6
Dependent Claim
28 words
The method of claim 1 wherein said wear-resistant material contains from about 2 to about 20 volume percent nickel aluminide with the balance being a copper base alloy.
Claim 7
Dependent Claim
71 words
A wear-resistant metallic article which comprises: (a) a metallic substrate; (b) a barrier layer of a metal selected from the group consisting of nickel, alloys of nickel, copper and alloys of copper bonded to a surface of the metallic substrate; and (c) a layer of wear-resistant material bonded to the surface of said barrier layer, with said wear-resistant material including a mixture of nickel aluminide and copper base alloy with lead.
Claim 8
Dependent Claim
71 words
A wear-resistant metallic article which comprises: (a) a metallic substrate; (b) a barrier layer of a metal selected from the group consisting of nickel, alloys of nickel, copper and alloys of copper bonded to a surface of the metallic substrate; and (c) a layer of wear-resistant material bonded to the surface of said barrier layer, with said wear-resistant material including a mixture of nickel aluminide and copper base alloy with lead.
Claim 9
Dependent Claim
16 words
A wear-resistant metallic article according to claim 6 wherein the metallic substrate is fabricated from steel.
Claim 10
Dependent Claim
38 words
A wear-resistant metallic article according to claim 6 wherein said barrier layer is composed of a metal selected from the group consisting of nickel and alloys of nickel and has a thickness of greater than about 0.0005 inch.
Claim 11
Dependent Claim
38 words
A wear-resistant metallic article according to claim 6 wherein said barrier layer is composed of a metal selected from the group consisting of copper and alloys of copper and has a thickness of greater than about 0.002 inch.
Claim 12
Dependent Claim
31 words
A wear-resistant metallic article according to claim 6 wherein said wear-resistant material contains from about 2 to about 20 volume percent nickel aluminide with the balance being a copper base alloy.
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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) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |