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EP0074640A1
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Low-loss amorphous alloy
Assignee: Toshiba Corp
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Filing: 1982-09-10
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Granted: —
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Expires: 2002-09-10
Abstract
Abstract There is disclosed a low-loss amorphous alloy represented by the following formula: wherein M is at least one metallic element selected from the group consisting of V, Cr, Mo, Ta and W; X is 8 or a combination of B and Si (the amount of the Si is 10 or less atomic percent of its formula weight); and a, b, and c satisfy the relation of 0.01≤a≤0.075, 0≤b≤0.05, 0.02≤a+b≤0.075, and 125≤c≤21, respectively. The amorphous alloys of the present invention exhibit larger saturation magnetic flux densities and less iron losses than the conventional ferrite at a high frequency region.
Inventors
- 👤 Koichiro Inomata
- 👤 Michio Hasegawa
- 👤 Tadahiko Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 23:21
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
69 words
A low-loss amorphous alloy represented by the following formula: wherein M is at least one metallic element selected from the group consisting of V, Cr, Mo, Ta and W; X is B or a combination of B and Si (the amount of the Si is 10 or less atomic percent of its formula weight); and a, b and c satisfy the relations of 0.01≦a≦0.075, 0≦b≦0.05, 0.02≦a+b≦0.075 and 12≦c≦21, respectively.
Claim 2
Dependent Claim
69 words
A low-loss amorphous alloy represented by the following formula: wherein M is at least one metallic element selected from the group consisting of V, Cr, Mo, Ta and W; X is B or a combination of B and Si (the amount of the Si is 10 or less atomic percent of its formula weight); and a, b and c satisfy the relations of 0.01≦a≦0.075, 0≦b≦0.05, 0.02≦a+b≦0.075 and 12≦c≦21, respectively.
Claim 3
Dependent Claim
18 words
A low-loss amorphous alloy according to Claim 1, wherein c in said formula satisfies the relation of 17≦c≦19.
Claim 4
Dependent Claim
30 words
A low-loss amorphous alloy according to Claim 1, wherein said alloy is subjected to a heat treatment at a temperature not more than its crystallization temperature in a non-magnetic field.
Claim 5
Dependent Claim
33 words
A low-loss amorphous alloy as defined in Claim 1, represented by the following formula: wherein X and c have the same meanings as in Claim 1, and d satisfies the relation of 0.02≦d≦0.075.
Claim 6
Dependent Claim
18 words
A low-loss amorphous alloy according to Claim 4, wherein c in said formula satisfies the relation of 17≦c≦19.
Claim 7
Dependent Claim
49 words
A low-loss amorphous alloy according to Claim 5, wherein said alloy is subjected to a heat treatment at a temperature which is lower than its crystallization temperature by 40 to 70 °C. and not less than its Curie temperature in a non-magnetic field for 10 minutes to 3 hours.
Claim 8
Dependent Claim
40 words
A low-loss amorphous alloy as defined in Claim 1, represented by the following formula: wherein M, X and c have the same meanings as in Claim 1, and e and f satisfy the relations of 0.01≦e≦0.065, 0.01≦f≦0,05 and 0.02≦e+f≦0.075, respectively.
References Cited (Backward Citations)
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