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US3928026A
Expired / Lapsed
US
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High temperature nicocraly coatings
Assignee: RTX Corp
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Filing: 1974-05-13
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Granted: 1975-12-23
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Expires: 1994-05-13
Abstract
Abstract A highly ductile coating for the nickel- and cobalt-base superalloys having long term elevated temperature oxidationerosion and sulfidation resistance and diffusional stability consists essentially of, by weight, 11-48% Co, 10-40% Cr, 9-15% Al, 0.1-1.0% reactive metal selected from the group consisting of yttrium, scandium, thorium, lanthanum and the other rare earth elements, balance essentially Ni, the nickel content being at least about 15%.
Inventors
- 👤 Ralph J Hecht
- 👤 George W Goward
- 👤 Richard C Elam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:41
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07; C22C19/03; C22C19/05; C22C19/051; C22C19/052; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/16; C23C30/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12931; Y10T428/12986
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
52 words
A COATING COMPOSITION FOR THE NICKEL-BASE AND COBALTBASE ALLOYS WHICH CONSISTS ESSENTIALLY OF, BY WEIGHT, 11-48% COBALT, 10-40% CHROMIUM, 9-15% ALUMINUM, 0.01-10% OF A REACTIVE METAL SELECTED FROM THE GROUP CONSISTING OF YTTRIUM, SCANDIUM, THORIUM, LANTHANUM AND OTHER RARE EARTH ELEMENTS BALANCE ESSENTIALLY NICKEL, THE NICKEL CONTENT BEING AT LEAST ABOUT 15%.
Claim 2
Dependent Claim
52 words
A COATING COMPOSITION FOR THE NICKEL-BASE AND COBALTBASE ALLOYS WHICH CONSISTS ESSENTIALLY OF, BY WEIGHT, 11-48% COBALT, 10-40% CHROMIUM, 9-15% ALUMINUM, 0.01-10% OF A REACTIVE METAL SELECTED FROM THE GROUP CONSISTING OF YTTRIUM, SCANDIUM, THORIUM, LANTHANUM AND OTHER RARE EARTH ELEMENTS BALANCE ESSENTIALLY NICKEL, THE NICKEL CONTENT BEING AT LEAST ABOUT 15%.
Claim 3
Dependent Claim
34 words
A coating composition for the nickel-base and cobalt-base alloys which consist essentially of, by weight, 15-40% cobalt, 12-30% chromium, 10-15% aluminum, 0.01-1.0% yttrium, balance essentially nickel, the nickel content being at least about 15%.
Claim 4
Dependent Claim
34 words
A coating composition for the nickel-base and cobalt-base alloys which consist essentially of, by weight, 15-40% cobalt, 12-30% chromium, 10-15% aluminum, 0.01-1.0% yttrium, balance essentially nickel, the nickel content being at least about 15%.
Claim 5
Dependent Claim
26 words
A coating composition for the nickel-base and cobalt-base alloys which consists essentially of, by weight, 25-40% cobalt, 14-22% chromium, 13-15% aluminum, 0.01-1.0% yttrium, balance essentially nickel.
Claim 6
Dependent Claim
26 words
A coating composition for the nickel-base and cobalt-base alloys which consists essentially of, by weight, 25-40% cobalt, 14-22% chromium, 13-15% aluminum, 0.01-1.0% yttrium, balance essentially nickel.
Claim 7
Dependent Claim
26 words
A coating composition for the nickel-base and cobalt-base alloys which consists essentially of, by weight, 15-35% cobalt, 14-22% chromium, 10-13% aluminum, 0.01-1.0% yttrium, balance essentially nickel.
Claim 8
Dependent Claim
26 words
A coating composition for the nickel-base and cobalt-base alloys which consists essentially of, by weight, 15-35% cobalt, 14-22% chromium, 10-13% aluminum, 0.01-1.0% yttrium, balance essentially nickel.
Claim 9
Dependent Claim
26 words
A coating composition for the nickel-base and cobalt-base alloys which consists essentially of, by weight, 32.5% cobalt, 20% chromium, 12% aluminum, 0.5% yttrium, balance essentially nickel.
Claim 10
Dependent Claim
26 words
A coating composition for the nickel-base and cobalt-base alloys which consists essentially of, by weight, 32.5% cobalt, 20% chromium, 12% aluminum, 0.5% yttrium, balance essentially nickel.
Claim 11
Dependent Claim
26 words
A coating coMposition for the nickel-base and cobalt-base alloys which consists essentially of, by weight, 20% nickel, 20% chromium, 12% aluminum, 0.5% yttrium, balance essentially cobalt.
Claim 12
Dependent Claim
26 words
A coating coMposition for the nickel-base and cobalt-base alloys which consists essentially of, by weight, 20% nickel, 20% chromium, 12% aluminum, 0.5% yttrium, balance essentially cobalt.
Claim 13
Dependent Claim
65 words
A gas turbine engine component comprising a nickel-base or cobalt-base superalloy coated to a thickness of at least about 0.003 inch with a coating consisting essentially of, by weight, 11-48% cobalt, 10-40% chromium, 9-15% aluminum, 0.01-1.0% of a reactive metal selected from the group consisting of yttrium, scandium, thorium and other rare earth elements, balance essentially nickel, the nickel content being at least about 15%.
Claim 14
Dependent Claim
65 words
A gas turbine engine component comprising a nickel-base or cobalt-base superalloy coated to a thickness of at least about 0.003 inch with a coating consisting essentially of, by weight, 11-48% cobalt, 10-40% chromium, 9-15% aluminum, 0.01-1.0% of a reactive metal selected from the group consisting of yttrium, scandium, thorium and other rare earth elements, balance essentially nickel, the nickel content being at least about 15%.
Claim 15
Dependent Claim
48 words
A gas turbine engine component comprising a nickel-base or cobalt-base superalloy coated to a thickness of at least about 0.003 inch with a coating consisting essentially of, by weight, 15-40% cobalt, 12-30% chromium, 10-15% aluminum, 0.01-1.0% yttrium, balance essentially nickel, the nickel content being at least about 15%.
Claim 16
Dependent Claim
48 words
A gas turbine engine component comprising a nickel-base or cobalt-base superalloy coated to a thickness of at least about 0.003 inch with a coating consisting essentially of, by weight, 15-40% cobalt, 12-30% chromium, 10-15% aluminum, 0.01-1.0% yttrium, balance essentially nickel, the nickel content being at least about 15%.
Claim 17
Dependent Claim
40 words
A gas turbine engine component comprising a nickel-base or cobalt-base superalloy coated to a thickness of at least about 0.003 inch with a coating consisting essentially of, by weight 25-40% cobalt, 14-22% chromium, 13-15% aluminum, 0.01-1.0% yttrium, balance essentially nickel.
Claim 18
Dependent Claim
40 words
A gas turbine engine component comprising a nickel-base or cobalt-base superalloy coated to a thickness of at least about 0.003 inch with a coating consisting essentially of, by weight 25-40% cobalt, 14-22% chromium, 13-15% aluminum, 0.01-1.0% yttrium, balance essentially nickel.
Claim 19
Dependent Claim
40 words
A gas turbine engine component comprising a nickel-base or cobalt-base superalloy coated to a thickness of at least about 0.003 inch with a coating consisting essentially of, by weight, 15-35% cobalt, 14-22% chromium, 10-13% aluminum, 0.01-1.0 yttrium, balance essentially nickel.
Claim 20
Dependent Claim
40 words
A gas turbine engine component comprising a nickel-base or cobalt-base superalloy coated to a thickness of at least about 0.003 inch with a coating consisting essentially of, by weight, 15-35% cobalt, 14-22% chromium, 10-13% aluminum, 0.01-1.0 yttrium, balance essentially nickel.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |