Patent US3758233A successfully refreshed from Google Patents.
US3758233A
Expired / Lapsed
US
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Vibration damping coatings
Assignee: Motors Liquidation Co
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Filing: 1972-01-17
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Granted: 1973-09-11
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Expires: 1992-01-17
Abstract
Abstract Nickel, cobalt, aluminum, iron-nickel, molybdenum, and titanium alloy articles are provided with a plasma sprayed coating for increasing the vibration damping capacity thereof. The coating consists of a outermost layer portion formed of an oxide ceramic or refractory carbide and an intermediate portion formed of a mixture of one of the above alloys and the material forming the outermost layer. In the preferred embodiment, the intermediate portion consists of two or more discrete layers, with the layers having decreasing alloy content and increasing oxide ceramic content toward the outermost layer portion.
Inventors
- 👤 R Newman
- 👤 K Cross
- 👤 J Cavanagh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:48
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/284; C; C23; C23C; C23C4/00; C23C4/02; C23C4/04; C23C4/10; C23C4/11; Y; Y10; Y10S; Y10S416/00; Y10S416/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
133 words
An article of manufacture comprising a substrate formed of a metal taken from the group consisting of nickel, cobalt, aluminum, iron-nickel, molybdenum, and titanium based alloys; and a sprayed coating thereover, said coating consisting of a discrete outermost layer portion consisting esseNtially of an oxide ceramic material taken from the group consisting of magnesium aluminate and zirconium dioxide, and an intermediate portion between said outermost portion and said substrate consisting of a plurality of discrete intermediate layers, each of said intermediate layers consisting essentially of a mixture of about 65 to 35 percent of the metal forming said substrate and the balance being of the material composing said outermost layer portion, the proportion of said oxide ceramic material in each of said intermediate layers increasing from said substrate to said outermost layer portion.
Claim 2
Dependent Claim
121 words
An article of manufacture comprising a core formed of aluminum, a sprayed substrate bonded to said core formed of molybdenum, and a sprayed coating over said substrate, said coating consisting of a discrete outermost layer portion consisting essentially of magnesium aluminate, and an intermediate portion between said outermost layer portion and said substrate consisting of a first discrete intermediate layer immediately beneath said outermost layer consisting essentially of about 65 percent magnesium aluminate and 35 percent molybdenum, and a second discrete intermediate layer between said first intermediate layer and said substrate consisting essentially of about 35 percent magnesium aluminate and 65 percent molybdenum, said substrate, outermost layer, and first and second intermediate layers being at least about 0.002 inch in thickness.
Claim 3
Dependent Claim
16 words
Claim 3 wherein said article is a compressor blade for use in a gas turbine engine.
Claim 4
Dependent Claim
87 words
An article of manufacture comprising a core formed of a nickel based superalloy, a sprayed nickel base superalloy substrate bonded to said core, and a spray coating over said substrate, said coating consisting of a discrete outer layer portion consisting essentially of zirconium dioxide, and an intermediate layer portion between said outermost layer portion and said substrate consisting essentially of about equal portions of a nickel base superalloy and zirconium dioxide, said substrate, outermost layer and intermediate layer each being at least about 0.002 inch in thickness.
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |