US4755239A
Expired / Lapsed
US
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Low magnetostriction amorphous metal alloys
Assignee: Honeywell International Inc
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Filing: 1986-07-02
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Granted: 1988-07-05
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Expires: 2006-07-02
Abstract
Abstract Cobalt rich amorphous metal alloys have a value of magnetostriction of about -6×10 -6 to +4×10 -6 and a saturation induction of about 0.1 to 1.0T. The alloys, especially suited for soft magnetic applications, have the formula (Co 1-x T x ) 100-b (B 1-y Y y ) 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
2026-11-06 20:19
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; C22C45/008
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
140 words
A magnetic alloy that is at least 50 percent glassy and consists essentially of a composition having the formula (Co 1-x-y-z Fe x Ni y T z ) 100-b (B 1-w M w ) b , where T is at least one of Mn, Cr, V, Ti, Mo, Nb and W, M is at least one of Si, P, C and Ge, B is boron, x ranges from about 0.05 to 0.25, Y ranges from about 0.05 to 0.80, z ranges from about 0 to 0.25, b ranges from about 12 to 30 atom percent, w ranges up to 0.75 when M is Si or Ge and up to 0.5 when M is C or P, said alloy having a value of magnetostriction of about -7×10 -6 and +5×10 -6 and a saturation induction of about 0.2 to 1.4 T.
Claim 2
Dependent Claim
140 words
A magnetic alloy that is at least 50 percent glassy and consists essentially of a composition having the formula (Co 1-x-y-z Fe x Ni y T z ) 100-b (B 1-w M w ) b , where T is at least one of Mn, Cr, V, Ti, Mo, Nb and W, M is at least one of Si, P, C and Ge, B is boron, x ranges from about 0.05 to 0.25, Y ranges from about 0.05 to 0.80, z ranges from about 0 to 0.25, b ranges from about 12 to 30 atom percent, w ranges up to 0.75 when M is Si or Ge and up to 0.5 when M is C or P, said alloy having a value of magnetostriction of about -7×10 -6 and +5×10 -6 and a saturation induction of about 0.2 to 1.4 T.
Claim 3
Dependent Claim
52 words
A magnetic alloy, as recited in claim 1 wherein y ranges from about 0.3 to 0.6 and z is less than 0.2 when T is more than 50 percent of at least one of Cr and V, said alloy having a value of magnetostriction of about -6×10 -6 to +4×10 -6 .
Claim 4
Dependent Claim
52 words
A magnetic alloy, as recited in claim 1 wherein y is at least 0.60 to 0.80 and z is less than 0.15 when T is more than 50 percent of at least one of Cr and V, said alloy having a value of magnetostriction of about -6×10 -6 to +4×10 -6 .
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) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |