Patent US3461297A successfully refreshed from Google Patents.
US4448618A
Expired / Lapsed
US
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Nickel based brazing filler metals
Assignee: Honeywell International Inc
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Filing: 1983-02-28
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Granted: 1984-05-15
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Expires: 2003-02-28
Abstract
Abstract A nickel based metal alloy consists essentially of about 25 to 35 atom percent palladium and about 15 to 20 atom percent silicon the balance being essentially nickel and incidental impurities. The alloy is especially suited for use as a filler metal in joining steels and superalloys at temperatures less than 1000 DEG C.
Inventors
- 👤 Debasis Bose
- 👤 Amitava Datta
- 👤 Nicholas J. DeCristofaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:48
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/322; C; C22; C22C; C22C45/00; C22C45/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
29 words
A metal alloy having a composition consisting essentially of 25 to 35 atom percent palladium and 15 to 20 atom percent silicon, the balance being nickel and incidental impurities.
Claim 2
Dependent Claim
29 words
A metal alloy having a composition consisting essentially of 25 to 35 atom percent palladium and 15 to 20 atom percent silicon, the balance being nickel and incidental impurities.
Claim 3
Dependent Claim
17 words
A metal alloy composition as recited in claim 1, which has at least about 50% glassy structure.
Claim 4
Dependent Claim
17 words
A metal alloy composition as recited in claim 1, which has at least about 90% glassy structure.
Claim 5
Dependent Claim
42 words
A brazing filler metal having a composition consisting essentially of 25 to 35 atom percent palladium and 15 to 25 atom percent silicon, the balance being nickel and incidental impurities, said filler metal having liquidus temperature of less than about 1000° C.
Claim 6
Dependent Claim
42 words
A brazing filler metal having a composition consisting essentially of 25 to 35 atom percent palladium and 15 to 25 atom percent silicon, the balance being nickel and incidental impurities, said filler metal having liquidus temperature of less than about 1000° C.
Claim 7
Dependent Claim
16 words
A brazing filler metal as recited in claim 4, said filler metal being in powder form.
Claim 8
Dependent Claim
20 words
A brazing filler metal as recited in claim 4, said filler metal being in the form of a homogeneous foil.
Claim 9
Dependent Claim
25 words
A brazing filler metal as recited in claim 6, said foil having a thickness ranging from about 0.0005 to 0.0040 inch (12 to 100 microns).
Claim 10
Dependent Claim
20 words
A brazing filler metal as recited in claim 6, said foil being ductile and having at least 90% glassy structure.
Claim 11
Dependent Claim
18 words
A brazing filler metal as recited in claim 6, said foil having at least about 50% glassy structure.
References Cited (Backward Citations)
US3856513A
Cited
US4169744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |