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US3717443A
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Zirconium diffusion barrier in titanium-silicon carbide composite materials
Assignee: Motors Liquidation Co
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Filing: 1971-06-24
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Granted: 1973-02-20
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Expires: 1991-06-24
Abstract
Abstract A composite article, comprising silicon carbide-containing reinforcing filaments in a titanium or titanium alloy matrix, is found to have increased strength when the filaments are initially provided with a thin coating of zirconium. The zirconium acts as a barrier to interdiffusion of titanium and silicon carbide and prevents weakening of the composite structure which would otherwise result from such interdiffusion.
Inventors
- 👤 N Mcmurray
- 👤 M Tumey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:40
CPC Classifications
C; C22; C22C; C22C47/00; C22C47/02; C22C47/06; C22C47/062; C22C47/068; C22C47/04; C22C49/00; C22C49/02; C22C49/10; C22C49/11; B; B22; B22F; B22F2998/00; B22F2998/10; Y; Y10; Y10S; Y10S264/00; Y10S264/19; Y10S428/00; Y10S428/902; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/934; Y10S428/941; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12549; Y10T428/12576; Y10T428/12771; Y10T428/12806; Y10T428/12812; Y10T428/29; Y10T428/2913; Y10T428/2916; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2944; Y10T428/298
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
A filament-reinforced titanium article comprising reinforcing filaments containing silicon carbide on at least the surface thereof in a titanium or titanium alloy matrix, said filaments having a coating layer of zirconium as a diffusion barrier between said silicon carbide and said titanium matrix.
Claim 2
Dependent Claim
43 words
A filament-reinforced titanium article comprising reinforcing filaments containing silicon carbide on at least the surface thereof in a titanium or titanium alloy matrix, said filaments having a coating layer of zirconium as a diffusion barrier between said silicon carbide and said titanium matrix.
Claim 3
Dependent Claim
32 words
A filament-reinforced composite article comprising many generally parallel silicon carbide-containing filaments in a titanium or titanium alloy matrix, and a diffusion barrier layer of zirconium between said filaments and said titanium matrix.
Claim 4
Dependent Claim
32 words
A filament-reinforced composite article comprising many generally parallel silicon carbide-containing filaments in a titanium or titanium alloy matrix, and a diffusion barrier layer of zirconium between said filaments and said titanium matrix.
Claim 5
Dependent Claim
40 words
A filament-reinforced composite article comprising many generally parallel fibers distributed in a matrix of titanium alloy, said fibers comprising a boron body portion, a silicon carbide coating on said body and a coextensive coating of zirconium on said silicon carbide.
Claim 6
Dependent Claim
40 words
A filament-reinforced composite article comprising many generally parallel fibers distributed in a matrix of titanium alloy, said fibers comprising a boron body portion, a silicon carbide coating on said body and a coextensive coating of zirconium on said silicon carbide.
Claim 7
Dependent Claim
42 words
A filament-reinforced composite article comprising many aligned tungsten wire core, silicon carbide-coated boron filaments distributed in a matrix of titanium base alloy, and a thin coating layer of zirconium on said filaments of the order of 0.0001 to 0.0002 inch in thickness.
Claim 8
Dependent Claim
42 words
A filament-reinforced composite article comprising many aligned tungsten wire core, silicon carbide-coated boron filaments distributed in a matrix of titanium base alloy, and a thin coating layer of zirconium on said filaments of the order of 0.0001 to 0.0002 inch in thickness.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |