Patent US4043841A successfully refreshed from Google Patents.
US4043841A
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Metal-refractory composite material
Assignee: Office National d'Études et de Recherches Aérospatiales
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Filing: 1975-08-27
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Granted: 1977-08-23
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Expires: 1995-08-27
Abstract
Abstract A refractory composite material usable in making gas-turbine blades for aviation applications. The composite material comprises a nickel-based superalloy matrix containing cobalt, aluminum in the form of a Ni3Al precipitate, and tungsten, and a reinforcing phase of oriented monocrystalline niobium carbide fibers formed in situ during production, by unidirectional solidification. The composition of the composite material by weight expressed in percent is:
Inventors
- 👤 Herve Bibring
- 👤 Jean-Pierre Trottier
- 👤 Tasadduq Khan
- 👤 Maurice Rabinovitch
- 👤 Jean-Francois Stohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:33
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/056; C30; C30B; C30B21/00; C30B21/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12444
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
A refractory composite material adapted to be used particularly in the manufacture of aviation turbine blades, comprising a nickel-based superalloy matrix consisting essentially of nickel, cobalt, aluminum, in the form of Ni 3 Al precipitate, and 7 to 10% by weight tungsten; and a reinforcing phase of oriented monocrystalline niobium carbide fibers formed in situ during production of the material by unidirectional solidification, said composite material having a density of less than 9 and a composition by weight of: Co -- 20 to 30% Cr -- 6 to 15% W -- 7 to 10% Al -- 3 to 6% Nb -- 4 to 6% C -- 0.4 to 0.65% Ni -- balance to 100.
Claim 2
Dependent Claim
114 words
A refractory composite material adapted to be used particularly in the manufacture of aviation turbine blades, comprising a nickel-based superalloy matrix consisting essentially of nickel, cobalt, aluminum, in the form of Ni 3 Al precipitate, and 7 to 10% by weight tungsten; and a reinforcing phase of oriented monocrystalline niobium carbide fibers formed in situ during production of the material by unidirectional solidification, said composite material having a density of less than 9 and a composition by weight of: Co -- 20 to 30% Cr -- 6 to 15% W -- 7 to 10% Al -- 3 to 6% Nb -- 4 to 6% C -- 0.4 to 0.65% Ni -- balance to 100.
Claim 3
Dependent Claim
37 words
The composite material according to claim 1 having the following % by weight composition: Co -- 20% Cr -- 10% W -- 10% al -- 3% Nb -- 4-6% C -- 0.4-0.65% ni -- balance to 100.
Claim 4
Dependent Claim
37 words
The composite material according to claim 1, having the following % by weight composition: Co -- 20% Cr -- 15% W -- 10% al -- 3% Nb -- 4-6% C -- 0.4-0.65% ni -- balance to 100.
Claim 5
Dependent Claim
36 words
The composite material according to claim 1, having the following % weight composition: Co -- 30% Cr -- 15% W -- 10% al -- 3% Nb -- 4-6% C -- 0.4-0.65% ni -- balance to 100.
Claim 6
Dependent Claim
36 words
The composite material according to claim 1, having the following % weight composition: Co -- 20% Cr -- 10% W -- 10% al -- 4% Nb -- 4-6% C -- 0.4-0.65% ni -- balance to 100.
Claim 7
Dependent Claim
36 words
The composite material according to claim 1, having the following % weight composition: Co -- 20% Cr -- 10% W -- 10% al -- 5% Nb -- 4-6% C -- 0.4-0.65% ni -- balance to 100.
Claim 8
Dependent Claim
36 words
The composite material according to claim 1, having the following % weight composition: Co -- 20% Cr -- 10% W -- 10% al -- 6% Nb -- 4-6% C -- 0.4-0.65% ni -- balance to 100.
Claim 9
Dependent Claim
36 words
The composite material according to claim 1, having the following % weight composition: Co -- 30% Cr -- 15% W -- 7.5% al -- 3% Nb -- 4-6% C -- 0.4-0.65% ni -- balance to 100.
References Cited (Backward Citations)
US3677835A
Cited
US3799769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |