US4482400A
Expired / Lapsed
US
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Low magnetostriction amorphous metal alloys
Assignee: Honeywell International Inc
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Filing: 1980-03-25
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Granted: 1984-11-13
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Expires: 2000-03-25
Abstract
Abstract Cobalt rich amorphous metal alloys have a value of magnetostriction of about -6x10-6 to +4x10-6 and a saturation induction of about 0.1 to 1.0T. The alloys, especially suited for soft magnetic applications, have the formula (Co1-xTx)100-b(B1-yYy)b, where T is at least one of Cr and V, Y is at least one of carbon and silicon, B is boron, x ranges from about 0.05 to 0.25, y ranges from about 0 to 0.75 and b ranges from about 14 to 28.
Inventors
- 👤 Robert C. O'Handley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:15
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/153; H01F1/15316; C; C22; C22C; C22C45/00; C22C45/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A magnetic alloy that is at least about 50 percent glassy and consists essentially of a composition having the formula (Co 1-x T x ) 100-b (B 1-y Y y ) b , where T is at least one of chromium and vanadium, Y is at least one of carbon, silicon, phosphorous and germanium, x ranges from about 0.05 to 0.25, y ranges from about 0 to 0.75, and b ranges from about 14 to 28 atom percent, plus incidental impurities, said alloy having a value of magnetostriction of about -6×10 -6 to 4×10 -6 and a saturation induction of about 0.2 to 1.0T.
Claim 2
Dependent Claim
104 words
A magnetic alloy that is at least about 50 percent glassy and consists essentially of a composition having the formula (Co 1-x T x ) 100-b (B 1-y Y y ) b , where T is at least one of chromium and vanadium, Y is at least one of carbon, silicon, phosphorous and germanium, x ranges from about 0.05 to 0.25, y ranges from about 0 to 0.75, and b ranges from about 14 to 28 atom percent, plus incidental impurities, said alloy having a value of magnetostriction of about -6×10 -6 to 4×10 -6 and a saturation induction of about 0.2 to 1.0T.
Claim 3
Dependent Claim
55 words
A magnetic alloy as recited in claim 1, wherein x ranges from about 0.05 to 0.20, y ranges from about 0 to 0.5 and b ranges from 15 to 24 atom percent, said alloy having a value of magnetostriction of about -3×10 -6 to +2×10 -6 and a saturation induction of about 0.3 to 0.7T.
Claim 4
Dependent Claim
56 words
A magnetic alloy, as recited in claim 2, wherein x ranges from about 0.05 to 0.15, y ranges from about 0 to 0.25 and b ranges from about 17 to 22 atom percent said alloy having a value of magnetostriction of about -3×10 -6 to +1×10 -6 and a saturation induction of about 0.3 to 0.6T.
References Cited (Backward Citations)
US4056411A
Cited
US4225339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |