US5738733A
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Ferrous metal glassy alloy
Assignee: BMG Co Ltd
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Filing: 1996-05-31
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Granted: 1998-04-14
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Expires: 2016-05-31
Abstract
Abstract The present invention provides a ferrous metal glassy alloy having temperature interval DELTA Tx of supercooled liquid as expressed by the following formula: DELTA Tx=Tx-Tg (where, Tx is an onset temperature of crystallization, and Tg is a glass transition temperature) of at least 40 K, which realizes magnetic properties as a bulky alloy.
Inventors
- 👤 Akihisa Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:39
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/02; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/153; H01F1/15308
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
86 words
A ferrous metal glassy alloy, comprising at least one metal selected from the group consisting of aluminum, gallium, indium and tin, at least one semi-metal element selected from the group consisting of phosphorus, carbon, boron, silicon, and germanium, with the balance being iron, and wherein the ferrous metal glassy alloy has a temperature interval ΔTx of a supercooled liquid of at least 40 K, as determined by the following formula: ΔTx=Tx-Tg where Tx is an onset temperature of crystallization and Tg is a glass transition temperature.
Claim 2
Dependent Claim
86 words
A ferrous metal glassy alloy, comprising at least one metal selected from the group consisting of aluminum, gallium, indium and tin, at least one semi-metal element selected from the group consisting of phosphorus, carbon, boron, silicon, and germanium, with the balance being iron, and wherein the ferrous metal glassy alloy has a temperature interval ΔTx of a supercooled liquid of at least 40 K, as determined by the following formula: ΔTx=Tx-Tg where Tx is an onset temperature of crystallization and Tg is a glass transition temperature.
Claim 3
Dependent Claim
50 words
The ferrous metal glassy alloy according to claim 1, comprising, in atomic percentage: from 1 to 10% aluminum, from 0.5 to 4% gallium, from 9 to 15% phosphorus, from 5 to 7% carbon, from 2 to 10% boron, and the balance being iron, wherein the alloy may contain incidental impurities.
Claim 4
Dependent Claim
16 words
The ferrous metal glassy alloy according to claim 2, further comprising from 0.5 to 2% silicon.
Claim 5
Dependent Claim
15 words
The ferrous metal glassy alloy according to claim 2, further comprising 0.5 to 4% germanium.
Claim 6
Dependent Claim
35 words
The ferrous metal glassy alloy according to claim 1, further comprising up to 7%, in atomic percentage, of at least one element selected from the group consisting of niobium, molybdenum, hafnium, tantalum, tungsten and chromium.
Claim 7
Dependent Claim
19 words
The ferrous metal glassy alloy according to claim 1, further comprising up to 10%, in atomic percentage, of nickel.
Claim 8
Dependent Claim
19 words
The ferrous metal glassy alloy according to claim 1, further comprising up to 30%, in atomic percentage, of cobalt.
Claim 9
Dependent Claim
12 words
The ferrous metal glassy alloy according to claim 1, which is annealed.
References Cited (Backward Citations)
No citation records indexed.
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| 3.5 Years (Year 4) | 2001-04-13 | 2001-10-13 | 2002-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-13 | 2005-10-13 | 2006-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-13 | 2009-10-13 | 2010-04-14 | $7700.00 | Window Closed / Lapsed |