Patent US4316573A successfully refreshed from Google Patents.
US4316573A
Expired / Lapsed
US
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Homogeneous brazing foils of copper based metallic glasses
Assignee: Honeywell International Inc
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Filing: 1980-07-18
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Granted: 1982-02-23
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Expires: 2000-07-18
Abstract
Abstract Novel glassy metal alloys and the brazing of metal parts employing a homogeneous ductile filler metal foil of these alloys is disclosed. The glassy metal alloys have a composition consisting essentially of 5 to 40 atom percent nickel, 15 to 20 atom percent phosphorus with the balance being copper and incidental impurities. These alloys can be produced in the form of foil useful for brazing metal articles, particularly articles composed of copper and copper alloys.
Inventors
- 👤 Nicholas J. DeCristofaro
- 👤 Claude Henschel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:40
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0222; B23K35/0233; B23K35/22; B23K35/24; B23K35/30; B23K35/302; C; C22; C22C; C22C45/00; C22C45/001
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
60 words
A process for fabricating homogeneous ductile foil having a composition consisting essentially of 5 to 40 atom percent nickel, 15 to 20 atom percent phosphorus, the balance being copper and incidental impurities, which process comprises forming a melt of the composition and quenching the melt on a chill surface at a rate of at least about 10 5 ° C./sec.
Claim 2
Dependent Claim
60 words
A process for fabricating homogeneous ductile foil having a composition consisting essentially of 5 to 40 atom percent nickel, 15 to 20 atom percent phosphorus, the balance being copper and incidental impurities, which process comprises forming a melt of the composition and quenching the melt on a chill surface at a rate of at least about 10 5 ° C./sec.
Claim 3
Dependent Claim
34 words
The process of claim 1 in which the foil has a composition consisting essentially of 9 to 11 atom percent nickel, 17 to 19 atom percent phosphorus, the balance being copper and incidental impurities.
Claim 4
Dependent Claim
18 words
The process of claim 1 in which said foil has a thickness ranging from 0.0010 to 0.0025 inch.
Claim 5
Dependent Claim
98 words
A process for joining together two or more metal parts which comprises: (a) interposing a filler metal between the metal parts to form an assembly, the filler metal having a melting point less than that of any of the parts; (b) heating the assembly to at least the melting temperature of the filler metal; and (c) cooling the assembly; wherein the improvement comprises employing, as the filler metal, a homogeneous copper based foil having a composition consisting essentially of 5 to 40 atom percent nickel, 15 to 20 atom percent phosphorus, the balance being copper and incidental impurities.
Claim 6
Dependent Claim
98 words
A process for joining together two or more metal parts which comprises: (a) interposing a filler metal between the metal parts to form an assembly, the filler metal having a melting point less than that of any of the parts; (b) heating the assembly to at least the melting temperature of the filler metal; and (c) cooling the assembly; wherein the improvement comprises employing, as the filler metal, a homogeneous copper based foil having a composition consisting essentially of 5 to 40 atom percent nickel, 15 to 20 atom percent phosphorus, the balance being copper and incidental impurities.
Claim 7
Dependent Claim
17 words
The process of claim 4 in which the filler metal foil is at least about 50% glassy.
Claim 8
Dependent Claim
13 words
The process of claim 4 in which the filler metal is 100% glassy.
Claim 9
Dependent Claim
37 words
The process of claim 4 in which the ductile filler metal foil has a composition consisting essentially of 9 to 11 atom percent nickel, 17 to 19 atom percent phosphorus, the balance being copper and incidental impurities.
Claim 10
Dependent Claim
19 words
The process of claim 4 in which the total thickness of the foil ranges from 0.0010 to 0.0025 inch.
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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) | 1985-02-22 | 1985-08-24 | 1986-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-22 | 1989-08-24 | 1990-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-22 | 1993-08-24 | 1994-02-23 | $7700.00 | Window Closed / Lapsed |