Patent US4746379A successfully refreshed from Google Patents.
US4746379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low temperature, high strength nickel-palladium based brazing alloys
Assignee: Honeywell International Inc
•
Filing: 1987-08-25
•
Granted: 1988-05-24
•
Expires: 2007-08-25
Abstract
Abstract Nickel based alloy compositions are disclosed comprising between about 25 and about 35 atom percent palladium, about 10 to about 13 atom percent of at least one of boron and silicon, from about 5 to about 20 atom percent cobalt, up to about 5 atom percent molybdenum, the alloys exhibiting a liquidus temperature of less than about 950° C. The alloys are particularly suited for brazing stainless steel and cemented carbide joints. Also disclosed are brazing processes utilizing the alloys.
Inventors
- 👤 Anatol Rabinkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:08
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; C22C5/00; C22C5/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
104 words
An alloy having a composition represented by the formula: Cr.sub.a Pd.sub.b B.sub.c Si.sub.d Co.sub.e Mo.sub.f Ni.sub.bal plus incidental impurities, where the subscripts are in atom percent and "a" is in the range of 0 to about 10, "b" is in the range of about 25 to about 35, "c" is in the range of 0 to about 13, "d" is in the range of 0 to about 13, "e" is in the range of about 5 to about 20, "f" is in the range of 0 to about 5, and the sum of c+d is in the range of about 10 to about 13.
Claim 2
Dependent Claim
104 words
An alloy having a composition represented by the formula: Cr.sub.a Pd.sub.b B.sub.c Si.sub.d Co.sub.e Mo.sub.f Ni.sub.bal plus incidental impurities, where the subscripts are in atom percent and "a" is in the range of 0 to about 10, "b" is in the range of about 25 to about 35, "c" is in the range of 0 to about 13, "d" is in the range of 0 to about 13, "e" is in the range of about 5 to about 20, "f" is in the range of 0 to about 5, and the sum of c+d is in the range of about 10 to about 13.
Claim 3
Dependent Claim
16 words
An alloy as recited in claim 1 wherein the alloy is at least about 50% glassy.
Claim 4
Dependent Claim
14 words
An alloy as recited in claim 1 which is at least about 90% glassy.
Claim 5
Dependent Claim
19 words
As alloy as recited in claim 1 wherein "f" is in the range of about 1 to about 5.
Claim 6
Dependent Claim
19 words
An alloy as recited in claim 1 wherein "c" is in the range of about 5 to about 12.
Claim 7
Dependent Claim
15 words
An alloy as recited in claim 5 wherein "f" is not more than about 3.5.
Claim 8
Dependent Claim
20 words
An alloy as recited in claim 1 wherein the alloy has a liquidus temperature not greater than about 925° C.
Claim 9
Dependent Claim
61 words
A nickel-based alloy comprising from about 25 to about 35 atom percent palladium, from about 10 to about 13 atom percent of at least one of B and Si, from about 5 to about 20 atom percent Co, and molybdenum is an amount not to exceed about 5 atom percent, and exhibiting a liquidus temperature of less than about 950° C.
Claim 10
Dependent Claim
61 words
A nickel-based alloy comprising from about 25 to about 35 atom percent palladium, from about 10 to about 13 atom percent of at least one of B and Si, from about 5 to about 20 atom percent Co, and molybdenum is an amount not to exceed about 5 atom percent, and exhibiting a liquidus temperature of less than about 950° C.
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) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |