Patent US4838337A successfully refreshed from Google Patents.
US4838337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating titanium alloys in foil form
Assignee: General Electric Co
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Filing: 1987-02-04
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Granted: 1989-06-13
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Expires: 2007-02-04
Abstract
Abstract A method for forming a titanium metal foil is provided. The titanium metal may be essentially any titanium alloy. The alloy is first provided in powder form. The powder is sprayed through a low pressure RF plasma deposition apparatus onto a preformed foil mounted onto a rotating drum. The preformed foil is removed from the drum after plasma deposit of the layer of titanium alloy and the preformed foil is removed from the plasma deposit foil to leave a free standing foil of the titanium alloy.
Inventors
- 👤 Paul A. Siemers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:10
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C23C4/185; B; B22; B22F; B22F3/00; B22F3/115; C23C4/12; C23C4/137
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
121 words
The method of forming foil of alloys of titanium with other metals which comprises, providing a powder of a titanium based alloy to be formed into a foil, providing a drum adapted to being rotated in a low pressure plasma spray deposit apparatus, mounting a preformed foil of a metal of high melting point onto the drum to cover a cylindrical surface thereof, disposing the drum and foil in a low pressure plasma spray deposit apparatus, low pressure plasma spray depositing said powder onto the surface of the foil on said drum, separating the preformed foil and the titanium alloy deposit from the drum, and separating the preformed foil from the titanium alloy foil formed by the low pressure plasma deposit.
Claim 2
Independent Claim
121 words
The method of forming foil of alloys of titanium with other metals which comprises, providing a powder of a titanium based alloy to be formed into a foil, providing a drum adapted to being rotated in a low pressure plasma spray deposit apparatus, mounting a preformed foil of a metal of high melting point onto the drum to cover a cylindrical surface thereof, disposing the drum and foil in a low pressure plasma spray deposit apparatus, low pressure plasma spray depositing said powder onto the surface of the foil on said drum, separating the preformed foil and the titanium alloy deposit from the drum, and separating the preformed foil from the titanium alloy foil formed by the low pressure plasma deposit.
Claim 3
Dependent Claim
14 words
The method of claim 1 in which the titanium base metal alloy is Ti-6Al-4V.
Claim 4
Dependent Claim
14 words
The method of claim 1 in which the titanium base metal alloy is Ti-6Al-2Sn-4Zr-2Mo.
Claim 5
Dependent Claim
33 words
The method of claim 1 in which the titanium base metal alloy is based on the Ti 3 Al crystal structure and is Ti 3 Al, or niobium modified Ti 3 Al (Ti-14Al-21Cb).
Claim 6
Dependent Claim
19 words
The method of claim 1 in which the titanium base metal alloy is based on a TiAl crystal structure.
Claim 7
Independent Claim
75 words
The method of forming foils of titanium base alloys which comprises providing a radio frequency powered low pressure plasma spray apparatus, providing a powder of a titanium base alloy having an average particle size in excess of 100 μm, plasma spray depositing said titanium base alloy onto a substrate surface to produce a foil of said titanium base alloy, separating said foil from said substrate surface, and heat treating the foil to improve its properties.
Claim 8
Independent Claim
75 words
The method of forming foils of titanium base alloys which comprises providing a radio frequency powered low pressure plasma spray apparatus, providing a powder of a titanium base alloy having an average particle size in excess of 100 μm, plasma spray depositing said titanium base alloy onto a substrate surface to produce a foil of said titanium base alloy, separating said foil from said substrate surface, and heat treating the foil to improve its properties.
Claim 9
Dependent Claim
12 words
The method of claim 6 wherein the titanium base alloy is Ti-6Al-4V.
Claim 10
Dependent Claim
12 words
The method of claim 6 wherein the titanium base alloy is Ti-6Al-2Sn-4Zr-2Mo.
Claim 11
Dependent Claim
21 words
The method of claim 6 wherein the titanium base alloy is Ti 3 Al or niobium modified Ti 3 Al (Ti-14Al-21Cb).
Claim 12
Dependent Claim
13 words
The method of claim 6 in which the titanium base alloy is TiAl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |