US4152144A
Expired / Lapsed
US
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Metallic glasses having a combination of high permeability, low magnetostriction, low ac core loss and high thermal stability
Assignee: Honeywell International Inc
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Filing: 1976-12-29
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Granted: 1979-05-01
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Expires: 1996-12-29
Abstract
Abstract Metallic glasses having high permeability, low magnetostriction, low ac core loss and high thermal stability are disclosed. In contrast to the prior art in which one, or at most two, of these properties are attained in one metallic glass, all those outstanding properties are achieved in a single metallic glass selected from one of the compositions of the invention. The metallic glasses consist essentially of about 63 to 83 atom percent of at least one metal selected from the group consisting of iron and cobalt, from 0 to about 60% of which metal may be replaced with nickel, about 2 to 12 atom percent of at least one element selected from the group consisting of molybdenum, tungsten, niobium and titanium, and about 15 to 25 atom percent of at least one metalloid element selected from the group consisting of boron, phosphorus and carbon plus incidental impurities.
Inventors
- 👤 Ryusuke Hasegawa
- 👤 Chong-Ping Chou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:10
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/008; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/153
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
128 words
A metallic glass that is substantially completely glassy having a combination of high permeability, low magnetostriction, low ac core loss and high thermal stability consisting of (a) about 53 to 83 atom percent iron and 0 to about 10 atom percent cobalt, the total of iron and cobalt in the metal alloy ranging from about 63 to 83 atom percent, up to about 60% of the total of which metal may be replaced with nickel, (b) about 2 to 12 atom percent of at least one element selected from the group consisting of molybdenum, tungsten, niobium and titanium and (c) about 15 to 25 atom percent of a metalloid selected from the group consisting of substantially boron only, substantially phosphorus only and carbon plus boron plus incidental impurities.
Claim 2
Dependent Claim
128 words
A metallic glass that is substantially completely glassy having a combination of high permeability, low magnetostriction, low ac core loss and high thermal stability consisting of (a) about 53 to 83 atom percent iron and 0 to about 10 atom percent cobalt, the total of iron and cobalt in the metal alloy ranging from about 63 to 83 atom percent, up to about 60% of the total of which metal may be replaced with nickel, (b) about 2 to 12 atom percent of at least one element selected from the group consisting of molybdenum, tungsten, niobium and titanium and (c) about 15 to 25 atom percent of a metalloid selected from the group consisting of substantially boron only, substantially phosphorus only and carbon plus boron plus incidental impurities.
Claim 3
Dependent Claim
19 words
The metallic glass of claim 1 in which the metalloid content ranges from about 17 to 20 atom percent.
Claim 4
Dependent Claim
17 words
The metallic glass of claim 2 having the nominal composition Fe 81 Mo 2 B 17 .
Claim 5
Dependent Claim
42 words
The metallic glass of claim 1 consisting of about 70 to 78 atom percent of at least one metal selected from the group of iron and iron plus cobalt, about 2 to 10 atom percent molybdenum and about 20 atom percent boron.
Claim 6
Dependent Claim
28 words
The metallic glass of claim 4 consisting of about 70 to 78 atom percent iron, about 2 to 10 atom percent molybdenum and about 20 atom percent boron.
Claim 7
Dependent Claim
28 words
The metallic glass of claim 5 consisting of about 74 to 78 atom percent iron, about 2 to 6 atom percent molybdenum and about 20 atom percent boron.
Claim 8
Dependent Claim
29 words
The metallic glass of claim 6 selected from the group of nominal compositions consisting of Fe 78 Mo 2 B 20 and Fe 76 Mo 4 B 20 .
Claim 9
Dependent Claim
38 words
The metallic glass of claim 1 consisting of about 68 to 78 atom percent iron, up to about 60% of which is replaced with nickel, about 2 to 12 atom percent molybdenum and about 20 atom percent boron.
Claim 10
Dependent Claim
33 words
The metallic glass of claim 8 consisting of about 40 atom percent iron, about 28 to 38 atom percent nickel, about 2 to 12 atom percent molybdenum and about 20 atom percent boron.
Claim 11
Dependent Claim
33 words
The metallic glass of claim 9 consisting of about 40 atom percent iron, about 34 to 38 atom percent nickel, about 2 to 6 atom percent molybdenum and about 20 atom percent boron.
Claim 12
Dependent Claim
19 words
The metallic glass of claim 10 having the nominal composition Fe 40 Ni 36 Mo 4 B 20 .
Claim 13
Dependent Claim
48 words
The metallic glass of claim 1 consisting of about 68 to 76 atom percent of at least one metal selected from the group consisting of iron and iron plus cobalt, about 4 to 12 atom percent molybdenum, about 16 atom percent carbon and about 2 atom percent boron.
Claim 14
Dependent Claim
21 words
The metallic glass of claim 12 having the nominal composition Fe 70 Co 6 Mo 4 C 18 B 2 .
Claim 15
Dependent Claim
33 words
The metallic glass of claim 12 consisting of about 68 to 76 atom percent iron, about 4 to 12 atom percent molybdenum, about 18 atom percent carbon and about 2 atom percent boron.
Claim 16
Dependent Claim
33 words
The metallic glass of claim 14 consisting of about 72 to 76 atom percent iron, about 4 to 8 atom percent molybdenum, about 18 atom percent carbon and about 2 atom percent boron.
Claim 17
Dependent Claim
19 words
The metallic glass of claim 15 having the nominal composition Fe 72 Mo 8 C 18 B 2 .
Claim 18
Dependent Claim
43 words
The metallic glass of claim 1 consisting of about 68 to 76 atom percent iron, up to about 60% of which is replaced with nickel, about 4 to 12 atom percent molybdenum, about 18 atom percent carbon and about 2 atom percent boron.
Claim 19
Dependent Claim
38 words
The metallic glass of claim 17 consisting of about 67 to 76 atom percent iron, 0 to about 9 atom percent nickel, about 4 atom percent molybdenum, about 18 atom percent carbon and about 2 atom percent boron.
Claim 20
Dependent Claim
21 words
The metallic glass of claim 18 having the nominal composition Fe 72 Ni 6 Mo 4 C 18 B 2 .
Claim 21
Dependent Claim
42 words
The metallic glass of claim 1 consisting of about 75 to 78 atom percent iron, about 2 to 5 atom percent of at least one element selected from the group consisting of tungsten, niobium and titanium and about 20 atom percent boron.
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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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |