US4101713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame spray oxidation and corrosion resistant superalloys
Assignee: General Electric Co
•
Filing: 1977-01-14
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Granted: 1978-07-18
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Expires: 1997-01-14
Abstract
Abstract A flame sprayed high energy milled powder coated article comprising a superalloy substrate and a coating consisting of chromium and at least one element selected from iron, cobalt or nickel. Optionally the coating can contain other elements, e.g., aluminum, carbon, yttrium or the rare earth elements.
Inventors
- 👤 Harold H. Hirsch
- 👤 John R. Rairden, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:27
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; C23C4/073; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12069; Y10T428/12139; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12771; Y10T428/12778; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854; Y10T428/12861; Y10T428/12931
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
33 words
An article comprising a coated superalloy body, said body having been flame spray coated with high energy milled, mechanically alloyed powder particles having an average particle size of less than about 44 microns.
Claim 2
Dependent Claim
33 words
An article comprising a coated superalloy body, said body having been flame spray coated with high energy milled, mechanically alloyed powder particles having an average particle size of less than about 44 microns.
Claim 3
Dependent Claim
16 words
The claim 1 article, wherein said body is selected from a nickel- or a cobalt-base superalloy.
Claim 4
Dependent Claim
10 words
The claim 1 article, wherein the powder contains dispersoid particles.
Claim 5
Dependent Claim
11 words
The claim 1 article, wherein the powder contains heat-fusible alloy components.
Claim 6
Dependent Claim
22 words
The claim 1 article, wherein the powder consists essentially of chromium and at least one element selected from iron, cobalt or nickel.
Claim 7
Dependent Claim
9 words
The claim 5 article, wherein the powder contains aluminum.
Claim 8
Dependent Claim
13 words
The claim 6 article, wherein the powder contains a dispersion strengthening submicron dispersoid.
Claim 9
Dependent Claim
23 words
The claim 7 article, wherein said dispersoid is present on a volume basis in an amount of from about 0.5 to 5 percent.
Claim 10
Dependent Claim
19 words
The claim 1 article, wherein at least a powder component has a melting point exceeding at least 800° F.
Claim 11
Dependent Claim
23 words
The claim 7 article, wherein said dispersoid is selected from Al 2 O 3 , ThO 2 or Y 2 O 3 .
Claim 12
Dependent Claim
11 words
The claim 1 article, further comprising an aluminized overcoated superalloy body.
Claim 13
Dependent Claim
58 words
The claim 1 article, where on a weight percent basis the powder contains 32% Cr, 3% Al and the balance Co and the superalloy body contains 16% Cr, 8.5% Co, 3.4% Ti, 3.4% Al, 2.6% W, 1.75% Mo, 0.3% Si, 0.2% Mn, 0.9% Cb, 0.5% Fe, 0.175% Ta, 0.17% C, 0.01% B, 0.10% Zr, and the balance Ni.
Claim 14
Dependent Claim
60 words
The claim 1 article, where on a weight percent basis the powder contains 29% Cr, 6% Al, 1% Y and the balance Cr and the superalloy substrate contains 16% Cr, 8.5% Co, 3.4% Ti, 3.4% Al, 2.6% W, 1.75% Mo, 0.3% Si, 0.2% Mn, 0.9% Cb, 0.5% Fe, 0.175% Ta, 0.17% C, 0.01%B , 0.10% Zr, and the balance Ni.
Claim 15
Independent Claim
41 words
The method of improving the high temperature oxidation and corrosion resistance of a superalloy body which comprises flame spraying the superalloy body with high energy milled, mechanically alloyed powder particles having an average particle size of less than about 44 microns.
Claim 16
Independent Claim
41 words
The method of improving the high temperature oxidation and corrosion resistance of a superalloy body which comprises flame spraying the superalloy body with high energy milled, mechanically alloyed powder particles having an average particle size of less than about 44 microns.
Claim 17
Dependent Claim
15 words
The method of claim 14, further comprising (b) overaluminizing the resulting flame sprayed superalloy body.
Claim 18
Dependent Claim
16 words
The claim 14 method, wherein the superalloy body is selected from nickel or a cobalt-base superalloy.
Claim 19
Dependent Claim
22 words
The claim 16 method, wherein the powder consists essentially of chromium and at least one element selected from iron, cobalt or nickel.
Claim 20
Dependent Claim
9 words
The claim 17 method, wherein the powder contains aluminum.
Claim 21
Dependent Claim
13 words
The claim 18 method, wherein the powder contains a dispersion strengthening submicron dispersoid.
Claim 22
Dependent Claim
22 words
The claim 19 method, wherein the dispersoid is present on a volume basis in an amount of from about 0.5 to 5%.
Claim 23
Dependent Claim
18 words
The claim 1 article wherein said particles have an average particle size of less than about 30 microns.
Claim 24
Dependent Claim
19 words
The claim 1 article wherein said particles have an average particle size of from about 20 to 30 microns.
Claim 25
Dependent Claim
18 words
The claim 14 method wherein said particles have an average particle size of less than about 30 microns.
Claim 26
Dependent Claim
19 words
The claim 14 method wherein said particles have an average particle size of from about 20 to 30 microns.
References Cited (Backward Citations)
US3723092A
Cited
US3754903A
Cited
JPS4946523A
Cited
US3926568A
Cited
US3864093A
Cited
US3873347A
Cited
US3961098A
Cited
US3993454A
Cited
US4005989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |