US4192672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray-and-fuse self-fluxing alloy powders
Assignee: SCM Metal Products Inc
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Filing: 1978-01-18
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Granted: 1980-03-11
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Expires: 1998-01-18
Abstract
Abstract A boron-containing nickel or cobalt spray-and-fuse self-fluxing alloy powder contains hard precipitates of chromium boride and, optionally, chromium carbide which are internally precipitated from a melt of said alloy. Such alloy powder is made by atomizing the melt at about the temperature at which the melt is viscous.
Inventors
- 👤 Larry N. Moskowitz
- 👤 Erhard Klar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:35
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; C; C22; C22C; C22C32/00; C22C32/0047; C23; C23C; C23C4/00; C23C4/04; C23C4/06; B22F2998/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
52 words
A boron-containing nickel or cobalt spray-and-fuse, self-fluxing alloy powder containing hard precipitates of chromium boride and/or chromium carbide which precipitates are internally precipitated from a viscous melt of said alloy, at least about 5% of said precipitates by volume of said powder have an average size of at least about 10 microns.
Claim 2
Dependent Claim
52 words
A boron-containing nickel or cobalt spray-and-fuse, self-fluxing alloy powder containing hard precipitates of chromium boride and/or chromium carbide which precipitates are internally precipitated from a viscous melt of said alloy, at least about 5% of said precipitates by volume of said powder have an average size of at least about 10 microns.
Claim 3
Dependent Claim
19 words
The alloy powder of claim 1 wherein said precipitates are at least about 15 microns in average particle size.
Claim 4
Dependent Claim
18 words
The alloy powder of claim 1 wherein said precipitates range from about 10 microns to about 50 microns.
Claim 5
Dependent Claim
47 words
The alloy powder of claim 1 which contains a primary distribution of at least about 5% by volume of said precipitates of about 20 to 25 microns average particle size and a secondary distribution of said precipitates of about 5 to 10 microns in average particle size.
Claim 6
Dependent Claim
30 words
The alloy powder of claim 4 wherein said primary and said secondary distribution of said precipitates together ranges between about 5% and about 35% by volume of said alloy powder.
Claim 7
Dependent Claim
24 words
The alloy powder of claim 4 wherein the volume ratio of said primary distribution to said secondary distribution ranges between about 0.16 and 6.
Claim 8
Dependent Claim
20 words
The alloy powder of claim 1 which also contains internally precipitated hard precipitates of chromium carbide and of chromium boride.
Claim 9
Dependent Claim
20 words
The alloy powder of claim 5 which also contains internally precipitated hard precipitates of chromium carbide and of chromium boride.
Claim 10
Dependent Claim
15 words
A metal article coated with a fused coating of the alloy powder of claim 1.
Claim 11
Dependent Claim
15 words
A metal article coated with a fused coating of the alloy powder of claim 5.
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) | 1983-03-11 | 1983-09-10 | 1984-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-11 | 1987-09-10 | 1988-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-11 | 1991-09-10 | 1992-03-11 | $7700.00 | Window Closed / Lapsed |