US4150981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glassy alloys containing cobalt, nickel and iron having near-zero magnetostriction and high saturation induction
Assignee: Honeywell International Inc
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Filing: 1977-08-15
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Granted: 1979-04-24
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Expires: 1997-08-15
Abstract
Abstract Glassy alloys containing cobalt, nickel and iron and evidencing near-zero magnetostriction and high saturation induction are disclosed. The glassy alloys consist essentially of about 13 to 73 atom percent cobalt, about 5 to 50 atom percent nickel, about 2 to 17 atom percent iron, with the proviso that the total of cobalt, nickel and iron is about 80 atom percent, and the balance essentially boron plus incidental impurities. The magnetostriction of the glassy alloys ranges from about +3x10-6 to -3x10-6 and the saturation induction is at least about 8 kGauss.
Inventors
- 👤 Robert C. O'Handley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:27
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/04; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/153; H10; H10N; H10N35/00; H10N35/80; H10N35/85
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
A magnetic alloy that is substantially glassy, consisting essentially of about 13 to 73 atom percent cobalt, about 5 to 50 atom percent nickel, about 2 to 17 atom percent iron, with the proviso that the total of cobalt, nickel and iron is about 80 atom percent, and the balance essentially boron plus incidental impurities, said alloy having a value of magnetostriction ranging from about +3×10 -6 to -3×10 -6 and a saturation induction of at least about 8 kGauss.
Claim 2
Dependent Claim
80 words
A magnetic alloy that is substantially glassy, consisting essentially of about 13 to 73 atom percent cobalt, about 5 to 50 atom percent nickel, about 2 to 17 atom percent iron, with the proviso that the total of cobalt, nickel and iron is about 80 atom percent, and the balance essentially boron plus incidental impurities, said alloy having a value of magnetostriction ranging from about +3×10 -6 to -3×10 -6 and a saturation induction of at least about 8 kGauss.
Claim 3
Dependent Claim
17 words
The magnetic alloy of claim 1 in which nickel ranges from about 10 to 40 atom percent.
Claim 4
Dependent Claim
21 words
The magnetic alloy of claim 1 which is bounded by the polygon a-b-c-d-e-f-a shown in FIG. 1 of the attached drawings.
Claim 5
Dependent Claim
27 words
The magnetic alloy of claim 3 in which the composition lies within about ±2 atom percent of the line g-h-i of FIG. 1 of the attached drawings.
Claim 6
Dependent Claim
23 words
The magnetic alloy of claim 4 in which the composition lies substantially on the line g-h-i of FIG. 1 of the attached drawings.
Claim 7
Dependent Claim
48 words
The magnetic alloy of claim 1 selected from the group consisting of Co 56 Ni 16 Fe 8 B 20 , Co 44 Ni 24 Fe 12 B 20 , Co 34 Ni 34 Fe 12 B 20 and Co 28 Ni 36 Fe 16 B 20 .
References Cited (Backward Citations)
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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) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |