Iron-based amorphous alloy with high soft magnet performance and low cost and manufacturing method thereof

An iron-based amorphous alloy and manufacturing method technology, applied in the direction of magnetic materials, manufacturing tools, magnetic objects, etc., can solve the problems of unfavorable amorphous alloy magnetic properties, uneven heating of iron core, slow heating speed, etc., and achieve effective Conducive to the improvement of magnetic properties, fast heating speed and uniform heating effect

Inactive Publication Date: 2010-08-11
QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the traditional heat treatment process of amorphous alloys uses ordinary resistance wire annealing heat treatment furnace for annealing treatment. 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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  • Iron-based amorphous alloy with high soft magnet performance and low cost and manufacturing method thereof
  • Iron-based amorphous alloy with high soft magnet performance and low cost and manufacturing method thereof
  • Iron-based amorphous alloy with high soft magnet performance and low cost and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The raw materials are industrial pure iron, industrial iron boron, silicon and carbon rods. The raw materials are designed according to the atomic percentage range determined in claim 1 to design the following component alloys: 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 (atom%)

B amount (atom%)

Si content (atom%)

C amount (atom%)

1

Comparative example

75

10

13

2

2

Comparative example

76

10.5

11.5

2

3

Invention Examples

77

11

10

2

4

Invention Examples

78

11.7

9.3

2

5

Invention Examples

79.5

13

5.5

2

6

Invention Examples

79.5

15

3.5

2

7

Invention Examples

80

16

2

2

8

Invention Examples

80

16.5

3

0.5

9

Invention Examples

...

Embodiment 2

[0051] Reference Fe (100-x-y-z-w) B x Si y C z P w Chemical formula; where 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 to 23, preferably 19 to 20.5 or 20.5 to 23, more preferably 20 to 20.5. The element P is used to replace the part B, w is preferably 1-7, and x+w is preferably 11-20. The composition of the iron-based amorphous alloy expressed in atomic ratio is preferably: 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 intensity Bs of the iron-based amorphous alloy of the present 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.

[0052] The Fe with the best comprehensive performance is selected from Example 1. 79.5 B 15 Si 3.5 C 2 As a basis, part of B is replaced with cheap P to reduce the cost of alloy components. The general formula for amorphous alloy des...

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Abstract

The invention discloses an iron-based amorphous alloy with high soft magnet performance and low cost and a manufacturing method thereof. The iron-based amorphous alloy comprises the following components expressed at the 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 for replacing parts of B, w is preferably 1-7, and x+w is 11-20 preferably; the components of the iron-based amorphous alloy expressed at the atomic ratio are preferably 79.5 of Fe, 12 of B, 3.5 of Si, 2 of C and 3 of P, or 79.5 of Fe, 13 of B, 3.5 of Si, 2 of C and 2 of P or 79.5 of Fe, 11 of B, 3.5 of Si, 2 of C and 4 of P; and the high-saturation magnetic induction strength Bs of the iron-based amorphous alloy is 1.3-1.64 T, iron loss is P13/50<0.3W/ kg. Curie temperature variation is 381-418 DEG C. In the component proportioning of the alloy, cheap P is used for replacing parts of elements B so as to greatly lower manufacturing cost and keep favourable soft magnetic performance at the same time.

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 manufacturing 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 permeability, and low coercivity. In the past, for the above applications, Fe, Si alloys, Fe, Ni alloys, etc. were used, but now they are gradually being replaced by Fe-based or Co-based amorphous alloy ribbons. Since FeSi alloys have high saturation magnetic flux density, but large iron loss, there is a problem of increased power loss when used in transformers. In addition, for FeNi alloy, although it has excellent soft magnetic properties such as high magnetic permeability, it has the problem of low saturation magnetic flux density, so it is limit...

Claims

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Application Information

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Patent Type & Authority Applications(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
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