Patent USRE31691E successfully refreshed from Google Patents.
Patent US4987003A successfully refreshed from Google Patents.
US4987003A
Expired / Lapsed
US
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Production of aluminum matrix composite coatings on metal structures
Assignee: Rio Tinto Alcan International Ltd
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Filing: 1988-12-22
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Granted: 1991-01-22
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Expires: 2008-12-22
Abstract
Abstract A method is described for producing a corrosion and mechanical wear resistant coating on a metal surface to be protected. The method comprises (a) providing a rod or wire formed of a metal matrix composite comprising a metal matrix having distributed therein a finely divided solid filler material and (b) applying a coating of said metal matrix composite on said metal surface to be protected by means of a flame spraying or arc spraying process. This results in a coating of improved adhesion and low porosity.
Inventors
- 👤 David M. Schuster
- 👤 Harvey Fisher
- 👤 Pierre Cinq-Mars
- 👤 Bernard Altshuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:49
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
72 words
A method of producing a corrosion and mechanical wear resistant coating on a metal surface to be protected which comprises (a) providing a rod or wire formed of a metal matrix composite comprising a metal matrix having distributed therein a finely divided solid filler material and (b) applying a coating of said metal matrix composite on said metal surface to be protected by means of a flame spraying or arc spraying process.
Claim 2
Independent Claim
72 words
A method of producing a corrosion and mechanical wear resistant coating on a metal surface to be protected which comprises (a) providing a rod or wire formed of a metal matrix composite comprising a metal matrix having distributed therein a finely divided solid filler material and (b) applying a coating of said metal matrix composite on said metal surface to be protected by means of a flame spraying or arc spraying process.
Claim 3
Dependent Claim
22 words
A method according to claim 1 wherein the metal matrix composite is an aluminum matrix containing fibrous or particulate refractory filler material.
Claim 4
Dependent Claim
17 words
A method according to claim 2 wherein the matrix contains 5 to 60 volume percent of filler.
Claim 5
Dependent Claim
17 words
A method according to claim 2 wherein the matrix contains 5 to 40 volume percent of filler.
Claim 6
Dependent Claim
17 words
A method according to claim 2 wherein the matrix contains 10 to 20 volume percent of filler.
Claim 7
Dependent Claim
18 words
A method according to claim 2 wherein the metal surface is the surface of a ferrous metal structure.
Claim 8
Dependent Claim
22 words
A method according to claim 2 wherein the metal surface is the surface of a heat treatable, high strength aluminum alloy structure.
Claim 9
Dependent Claim
23 words
A method according to claim 6 wherein the filler material is selected from alumina, titanium diboride, silica, zirconia, silicon carbide and silicon nitride.
Claim 10
Dependent Claim
12 words
A method according to claim 6 wherein the filler material is alumina.
Claim 11
Dependent Claim
13 words
A method according to claim 8 wherein the aluminum matrix is unalloyed aluminum.
Claim 12
Dependent Claim
21 words
A method according to claim 8 wherein the protective coating is applied to a thickness of about 50 to 5000 microns.
References Cited (Backward Citations)
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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) | 1994-01-21 | 1994-07-23 | 1995-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-21 | 1998-07-23 | 1999-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-21 | 2002-07-23 | 2003-01-22 | $7700.00 | Window Closed / Lapsed |