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A low-cost iron-based amorphous alloy with high soft magnetic properties

An iron-based amorphous alloy, low-cost technology, applied in the direction of magnetic materials, magnetic objects, furnace types, etc., can solve the problems of unfavorable amorphous alloy magnetic properties, uneven heating of the iron core, and slow heating speed. Conducive to magnetic improvement, fast heating and uniform heating

Inactive Publication Date: 2012-02-01
QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In addition, the traditional heat treatment process of amorphous alloys is annealed with ordinary resistance wire annealing heat treatment furnace. The disadvantage is that the heating speed is slow and the iron core is heated unevenly, which is not conducive to the improvement of the magnetic properties of amorphous alloys.

Method used

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  • A low-cost iron-based amorphous alloy with high soft magnetic properties
  • A low-cost iron-based amorphous alloy with high soft magnetic properties
  • A low-cost iron-based amorphous alloy with high soft magnetic properties

Examples

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Embodiment 1

[0041] The raw materials are industrial pure iron, industrial ferroboron, silicon, and carbon rods. Raw material has been designed following composition alloy by the atomic percentage range determined in claim 1: Fe 75 B 10 Si 13 C 2 , Fe 76 B 10.5 Si 11.5 C 2 , Fe 77 B 11 Si 10 C 2 , Fe 78 B 11.7 Si 9.3 C 2 , Fe 79.5 B 15 Si 3.5 C 2 , Fe 79.5 B 13 Si 5.5 C 2 , Fe 80 B 16 Si 2 C 2 , Fe 80 B 16.5 Si 3 C 0.5 , Fe 81 B 16 Si 2.5 C 0.5 , Fe 81 B 14 Si 3 C 2 , Fe 82 B 15 Si 2 C 1 . As shown in Table 1,

[0042] serial number distinguish Fe content (atomic %) Amount of B (atomic%) Si amount (atom%) C amount (atomic%) 1 comparative example 75 10 13 2 2 comparative example 76 10.5 11.5 2 3 Invention example 77 11 10 2 4 Invention example 78 11.7 9.3 2 5 Invention example 79.5 13 5.5 2 6 Invention example 79.5 1...

Embodiment 2

[0050] Refer to Fe (100-x-y-z-w) B x Si y C z P w Chemical formula; wherein, x is 4-20, y is 3.5-5, z is 1.8-2.3, w is 0-10, and the balance is Fe. x+y+z+w is 19-23, preferably 19-20.5 or 20.5-23, more preferably 20-20.5. Element P is used to replace part B, w is preferably 1-7, and x+w is preferably 11-20. The composition of the iron-based amorphous alloy is preferably represented by atomic ratio: Fe 79.5 B 12 Si 3.5 C 2 P 3 or Fe 79.5 B 13 Si 3.5 C 2 P 2 or Fe 79.5 B 11 Si 3.5 C 2 P 4 or Fe 79.5 B 15-w Si 3.5 C 2 P w . The high saturation magnetic induction Bs of the iron-based amorphous alloy of the invention is 1.3-1.64T, and the iron loss is P13 / 50<0.3W / kg. The Curie temperature changes from 381 to 418°C.

[0051] The Fe with the best overall performance from preferred embodiment 1 79.5 B 15 Si 3.5 C 2 As a basis, part of B is replaced with cheap P, thereby reducing the cost of alloy components. The general formula of amorphous alloy desi...

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Abstract

The invention discloses a low-cost iron-based amorphous alloy with high soft magnetic properties, wherein the composition of the iron-based amorphous alloy is represented by atomic ratio: Fe(100-x-y-z-w)BxSiyCzPw; wherein, x is 4-20 , y is 3.5-5, z is 1.8-2.3, w is 0-10, and the balance is Fe. x+y+z+w is 19-23, preferably 19-20.5 or 20.5-23, more preferably 20-20.5. P is used to replace part B, w is preferably 1-7, and x+w is preferably 11-20. The composition of the iron-based amorphous alloy is preferably represented by atomic ratio: Fe79.5B12Si3.5C2P3 or Fe79.5B13Si3.5C2P2 or Fe79.5B11Si3.5C2P4. The high saturation magnetic induction Bs of the iron-based amorphous alloy is 1.3-1.64T, and the iron loss is P13 / 50<0.3W / kg. The Curie temperature changes from 381 to 418°C. In the composition ratio of the present invention, cheap P is used to replace part of element B, which greatly reduces the manufacturing cost and still has good soft magnetic properties.

Description

Technical field: [0001] The invention relates to a magnetic functional material and a preparation method thereof, in particular to a low-cost iron-based amorphous alloy with high soft magnetic properties and a preparation method thereof. Background technique: [0002] For soft magnetic alloys used in magnetic heads, transformers, and choke coils, the characteristics generally required are high saturation magnetic flux density, high magnetic permeability, and low coercive force. In the past, Fe, Si alloys, Fe, Ni alloys, etc. have been used for the above-mentioned applications, but these are gradually being replaced by Fe-based or Co-based amorphous alloy ribbons. Since the FeSi alloy has a high saturation magnetic flux density but has a large iron loss, there is a problem that power loss increases when used in a transformer. In addition, although FeNi alloy has excellent soft magnetic properties such as high magnetic permeability, it has the problem of low saturation magnet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/153C22C45/02C22C33/06B22F3/115C21D9/46
Inventor 邹永清秦振武庞靖李楠
Owner QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD