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US4093454A
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US
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Nickel-base sintered alloy
Assignee: Mitsubishi Materials Corp
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Filing: 1976-11-24
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Granted: 1978-06-06
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Expires: 1996-11-24
Abstract
Abstract A nickel-base sintered alloy which comprises: being manufactured from a reduced powder by the conventional powder metallurgy process with said reduced powder as a material powder, said reduced powder being prepared by simultaneously reducing a mixed powder consisting of powders of oxides of elements constituting said sintered alloy with a carbon powder added and mixed therein, and said reduced powder consisting of powders of said constituent elements and powders of carbides thereof; and consisting essentially of, in weight percentage: }chromium from 10.0 to 35.0 % }tungsten from 0.5 to 15.0 % }cobalt from 0.2 to 12.0 % }molybdenum from 0.1 to 20.0 % }iron from 0.1 to 20.0 % }titanium from 0.05 to 2.00 % }silicon from 0.05 to 1.50 % }manganese from 0.05 to 1.00 % }carbon from 0.1 to 3.5 % } AND THE BALANCE NICKEL AND INCIDENTAL IMPURITIES.
Inventors
- 👤 Yuichi Saito
- 👤 Osamu Mayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:35
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/0433; B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
170 words
A nickel-base sintered alloy having a density of at least 95 percent of the theoretical density thereof, and consisting essentially of, in weight percentage: ______________________________________
chromium from 10.0 to 35.0 %
tungsten from 0.5 to 15.0 %
cobalt from 0.2 to 12.0 %
molybdenum from 0.1 to 20.0 %
iron from 0.1 to 20.0 %
titanium from 0.05 to 2.00 %
silicon from 0.05 to 1.50 %
manganese from 0.05 to 1.00 %
carbon from 0.1 to 3.5 %
______________________________________ and the balance nickel and incidental impurities: said nickel-base sintered alloy being prepared by sintering a reduced powder mixture consisting of said metals and carbides of said metals, said reduced powder mixture being prepared by the steps comprising simultaneously reducing a mixed powder consisting essentially of powders of oxides of elements constituting said sintered alloy and carbon powder to produce a reduced sponge-like mass, and pulverizing said reduced sponge-like mass to obtain said reduced powder mixture; said alloy and said reduced powder mixture having substantially the same elemental chemical composition.
Claim 2
Dependent Claim
170 words
A nickel-base sintered alloy having a density of at least 95 percent of the theoretical density thereof, and consisting essentially of, in weight percentage: ______________________________________
chromium from 10.0 to 35.0 %
tungsten from 0.5 to 15.0 %
cobalt from 0.2 to 12.0 %
molybdenum from 0.1 to 20.0 %
iron from 0.1 to 20.0 %
titanium from 0.05 to 2.00 %
silicon from 0.05 to 1.50 %
manganese from 0.05 to 1.00 %
carbon from 0.1 to 3.5 %
______________________________________ and the balance nickel and incidental impurities: said nickel-base sintered alloy being prepared by sintering a reduced powder mixture consisting of said metals and carbides of said metals, said reduced powder mixture being prepared by the steps comprising simultaneously reducing a mixed powder consisting essentially of powders of oxides of elements constituting said sintered alloy and carbon powder to produce a reduced sponge-like mass, and pulverizing said reduced sponge-like mass to obtain said reduced powder mixture; said alloy and said reduced powder mixture having substantially the same elemental chemical composition.
Claim 3
Dependent Claim
42 words
The nickel-base sintered alloy as claimed in claim 1, consisting essentially of, in weight percentage: ______________________________________
chromium 19.0
tungsten 15.0
cobalt 10.0
molybdenum 0.5
iron 1.5
titanium 0.4
silicon 0.5
manganese 0.5
carbon 0.4
______________________________________ and the balance nickel and incidental impurities.
Claim 4
Dependent Claim
46 words
The nickel-base sintered alloy as claimed in claim 1, consisting essentailly of, in weight percentage: ______________________________________
chromium 19.0
tungsten 15.0
cobalt 10.0
molybdenum 0.5
iron 1.5
titanium 0.4
silicon 0.5
manganese 0.5
carbon 0.4
boron 0.1
aluminum 0.8
______________________________________ and the balance nickel and incidental impurities.
Claim 5
Dependent Claim
25 words
The nickel-base sintered alloy as claimed in claim 1, also containing, in weight percentage, from 0.05 to 1.00% boron and from 0.1 to 2.0 aluminum.
References Cited (Backward Citations)
US2853767A
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US3096174A
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US3194468A
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US3510292A
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US3326676A
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US3578443A
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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) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |