US4054723A
Expired / Lapsed
US
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Composite articles
Assignee: Rolls Royce PLC
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Filing: 1975-08-13
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Granted: 1977-10-18
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Expires: 1995-08-13
Abstract
Abstract An alloy specifically adapted for use as a coating on a nickel-base or cobalt-base superalloys consists of in weight about 12.5% to about 20% Chromium, about 2% to about 10% Silicon, about 2% to about 8% Aluminium, optionally up to about 10% Titanium, optionally up to about 0.25% from the group comprising Yttrium and the other rare earth metals, optionally up to about 20% Iron, optionally up to about 4% Niobium, optionally up to about 4% Molybdenum, optionally up to about 5% Manganese, the Iron, Niobium, Molybdenum and Manganese being present singly or in combinations such as to produce little or no deleterious effect on the corrosion resistance, the balance comprising essentially Nickel or Cobalt or a combination of these two, and impurities.
Inventors
- 👤 Gordon John Spencer Higginbotham
- 👤 John Wolverson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:45
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055; C22C19/07; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12931; Y10T428/12944
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
144 words
A nickel-base or cobalt-base superalloy having an alloy coating thereon consisting essentially of, in weight percent, about 12.5% to about 20% Chromium, about 4% to about 6% Silicon, about 2% to about 8% Aluminium, about 3% to about 6% Titanium, optionally up to about 0.25% from the group consisting of Ytrrium and the other rare earth metals, optionally up to about 20% Iron, optionally up to about 4% Niobium, optionally up to about 4% Molybdenum, optionally up to about 5% Manganese, the Iron, Niobium, Molybdenum or Manganese being present singly or in combinations such as to produce little or no deleterious effect on the corrosion resistance, the balance of said coating alloy being essentially Cobalt or Nickel, or a combination of these two, together with small amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the coating alloy.
Claim 2
Dependent Claim
144 words
A nickel-base or cobalt-base superalloy having an alloy coating thereon consisting essentially of, in weight percent, about 12.5% to about 20% Chromium, about 4% to about 6% Silicon, about 2% to about 8% Aluminium, about 3% to about 6% Titanium, optionally up to about 0.25% from the group consisting of Ytrrium and the other rare earth metals, optionally up to about 20% Iron, optionally up to about 4% Niobium, optionally up to about 4% Molybdenum, optionally up to about 5% Manganese, the Iron, Niobium, Molybdenum or Manganese being present singly or in combinations such as to produce little or no deleterious effect on the corrosion resistance, the balance of said coating alloy being essentially Cobalt or Nickel, or a combination of these two, together with small amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the coating alloy.
Claim 3
Dependent Claim
20 words
A coated article as claimed in claim 2 and which said alloy coating contains about 14% to about 16% Chromium.
Claim 4
Dependent Claim
17 words
A coated article as claimed in claim 1 and which contains about 4% to about 6% Aluminium.
Claim 5
Dependent Claim
126 words
A nickel-base or cobalt-base superally having an alloy coating thereon consisting essentially of, in weight percent about 14% to about 16% Chromium, about 4% to about 6% Silicon, about 4% to about 6% Aluminium, about 3% to about 6% Titanium, optionally up to about 0.25% Yttrium, optionally up to about 20% the Iron, optionally up to about 4% Niobium, optionally up to about 4% Molybdenum, optionally up to about 5% Manganese, Iron, Niobium, Molybdenum or Manganese being present singly or in combinations which do not detrimentally affect the corrosion resistance of the alloy coating, the balance being essentially Cobalt or Nickel singly or in combination together with small amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy coating.
Claim 6
Dependent Claim
126 words
A nickel-base or cobalt-base superally having an alloy coating thereon consisting essentially of, in weight percent about 14% to about 16% Chromium, about 4% to about 6% Silicon, about 4% to about 6% Aluminium, about 3% to about 6% Titanium, optionally up to about 0.25% Yttrium, optionally up to about 20% the Iron, optionally up to about 4% Niobium, optionally up to about 4% Molybdenum, optionally up to about 5% Manganese, Iron, Niobium, Molybdenum or Manganese being present singly or in combinations which do not detrimentally affect the corrosion resistance of the alloy coating, the balance being essentially Cobalt or Nickel singly or in combination together with small amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy coating.
Claim 7
Dependent Claim
55 words
A nickel-base or cobalt-base superalloy having an alloy coating thereon consisting essentially of by weight percent about 15% Chromium, about 5% Silicon, about 5% Aluminium, and about 4% Titanium, the balance being essentially Nickel together with small amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy coating.
Claim 8
Dependent Claim
55 words
A nickel-base or cobalt-base superalloy having an alloy coating thereon consisting essentially of by weight percent about 15% Chromium, about 5% Silicon, about 5% Aluminium, and about 4% Titanium, the balance being essentially Nickel together with small amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy coating.
Claim 9
Dependent Claim
55 words
A nickel-base or cobalt-base superalloy having an alloy coating thereon consisting essentially of by weight percent about 15% Chromium, about 5% Silicon, about 5% Aluminium, and about 4% Titanium, the balance being essentially Cobalt together with small amounts of impurities and incidental elements which do not detrimentally effect the basic characteristics of the alloy coating.
Claim 10
Dependent Claim
55 words
A nickel-base or cobalt-base superalloy having an alloy coating thereon consisting essentially of by weight percent about 15% Chromium, about 5% Silicon, about 5% Aluminium, and about 4% Titanium, the balance being essentially Cobalt together with small amounts of impurities and incidental elements which do not detrimentally effect the basic characteristics of the alloy coating.
Claim 11
Dependent Claim
58 words
A nickel-base or cobalt-base superalloy having an alloy coating thereon consisting essentially of by weight percent about 15% Cobalt, about 15% Chromium, about 5% Silicon, about 5% Aluminium, and about 4% Titanium, the balance being essentially Nickel together with small amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy coating.
Claim 12
Dependent Claim
58 words
A nickel-base or cobalt-base superalloy having an alloy coating thereon consisting essentially of by weight percent about 15% Cobalt, about 15% Chromium, about 5% Silicon, about 5% Aluminium, and about 4% Titanium, the balance being essentially Nickel together with small amounts of impurities and incidental elements which do not detrimentally affect the basic characteristics of the alloy coating.
Claim 13
Dependent Claim
58 words
A nickel-base or cobalt-base superalloy having an alloy coating thereon consisting essentially of by weight percent about 15% Chromium, about 5% Silicon, about 5% Aluminium, about 4% Titanium and about 0.25% Yttrium, the balance being essentially Nickel together with small amounts of impurities and incidental elements which do not detrimentally affect the basic characterics of the alloy coating.
Claim 14
Dependent Claim
58 words
A nickel-base or cobalt-base superalloy having an alloy coating thereon consisting essentially of by weight percent about 15% Chromium, about 5% Silicon, about 5% Aluminium, about 4% Titanium and about 0.25% Yttrium, the balance being essentially Nickel together with small amounts of impurities and incidental elements which do not detrimentally affect the basic characterics of the alloy coating.
References Cited (Backward Citations)
US3620693A
Cited
US3741791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |