US3904382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-resistant coating for superalloys
Assignee: General Electric Co
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Filing: 1974-06-17
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Granted: 1975-09-09
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Expires: 1994-06-17
Abstract
Abstract An oxidation and hot corrosion resistant alloy for coating a superalloy substrate. The surface coating composition comprises a nickel base alloy containing chromium and silicon.
Inventors
- 👤 Adrian M Beltran
- 👤 Norman R Lindblad
- 👤 Gerald E Wasielewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:12
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/30; B23K35/3033; B23K35/304; C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/052; C22C27/00; C22C27/06; C23; C23C; C23C30/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854; Y10T428/12861; Y10T428/12944
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
34 words
AN OXIDATION AND CORROSION RESISTANT COMPOSITE COMPRISING A SUPERALLOY SUBSTRATE AND A COATING ALLOY BONDED THERETO CONSISTING ESSENTIALLY OF THE FOLLOWING ELEMENTS IN WEIGHT PERCENT: CHROMIUM - 40-65% SILICON - 5-12% NICKEL - BALANCE
Claim 2
Dependent Claim
34 words
AN OXIDATION AND CORROSION RESISTANT COMPOSITE COMPRISING A SUPERALLOY SUBSTRATE AND A COATING ALLOY BONDED THERETO CONSISTING ESSENTIALLY OF THE FOLLOWING ELEMENTS IN WEIGHT PERCENT: CHROMIUM - 40-65% SILICON - 5-12% NICKEL - BALANCE
Claim 3
Dependent Claim
17 words
The coating alloy of claim 1 consisting essentially of 45% chromium 10% silicon and the balance nickel.
Claim 4
Dependent Claim
22 words
The alloy of claim 1 wherein the microstructure contains a mixture of gamma -Ni matrix, Alpha -Cr precipitate particles and Ni:Si eutectic.
Claim 5
Dependent Claim
23 words
The coating alloy of claim 1 wherein the thickness of the alloy coating composition for the superalloy may range up to 10 mils.
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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |