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Smfeb series amorphous soft magnetic alloy material and preparation method thereof

A soft magnetic alloy and amorphous technology, which is applied in the field of SmFeB amorphous soft magnetic alloy materials and its preparation, can solve the problems of limited product development and application, low saturation magnetic induction, and high cost, and achieve good application prospects. The effect of high saturation magnetic induction and high permeability

Active Publication Date: 2021-09-21
华麟津磁(天津)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Soft magnetic alloys containing Sm are also disclosed in the prior art, but the content of Sm is high, not only the cost is high, but also the saturation magnetic induction (Bs) is low, which limits the development and application of its products

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  • Smfeb series amorphous soft magnetic alloy material and preparation method thereof
  • Smfeb series amorphous soft magnetic alloy material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The atomic composition of the soft magnetic alloy material prepared in this embodiment is Fe 70.5 -Sm 5.0 -Co 2.1 -Mo 0.9 -Sn 1.0 -Cu 0.5 -B 12.0 -Si 8.0 .

[0038] The preparation method of the present embodiment is as follows:

[0039] (1) Weigh the raw materials of Fe, B, Si, Sm, Co, Mo, Sn and Cu respectively to make them conform to the alloy composition of the above chemical formula.

[0040] (2) The above-mentioned weighed raw materials are prepared in a crucible, and then the crucible is placed in a high-frequency induction heating furnace. After vacuuming, it is heated and smelted in an Ar protective atmosphere to obtain a master alloy melt.

[0041] (3) Spray the molten master alloy onto a rotating copper roll for rapid cooling to obtain an amorphous strip.

[0042] (4) Put the amorphous strip in a vacuum annealing furnace (the atmosphere is 80v%NH 3 +20v%H 2 , the total pressure is 300Pa), annealed for 10min at a temperature of 350°C, and then slowl...

Embodiment 2

[0045] The atomic composition of the soft magnetic alloy material prepared in this embodiment is Fe 70.5 -Sm 5.0 -Co 2.1 -Cr 0.9 -Sn 1.0 -Cu 0.5 -B 12.0 -Si 8.0 .

[0046] The preparation method of the present embodiment is as follows:

[0047] (1) Weigh the raw materials of Fe, B, Si, Sm, Co, Cr, Sn and Cu respectively to make them conform to the alloy composition of the above chemical formula.

[0048] (2) The above-mentioned weighed raw materials are prepared in a crucible, and then the crucible is placed in a high-frequency induction heating furnace. After vacuuming, it is heated and smelted in an Ar protective atmosphere to obtain a master alloy melt.

[0049] (3) Spray the molten master alloy onto a rotating copper roll for rapid cooling to obtain an amorphous strip.

[0050] (4) Put the amorphous strip in a vacuum annealing furnace (the atmosphere is 80v%NH 3 +20v%H 2 , the total pressure is 300Pa), annealed for 10min at a temperature of 350°C, and then slowl...

Embodiment 3

[0053] The atomic composition of the soft magnetic alloy material prepared in this embodiment is Fe 70.5 -Sm 5.0 -Co 2.1 -Mo 0.5 -Cr 0.4 -Sn 1.0 -Cu 0.5 -B 12.0 -Si 8.0 .

[0054] The preparation method of the present embodiment is as follows:

[0055] (1) Weigh the raw materials of Fe, B, Si, Sm, Co, Mo, Cr, Sn and Cu respectively to make them conform to the alloy composition of the above chemical formula.

[0056] (2) The above-mentioned weighed raw materials are prepared in a crucible, and then the crucible is placed in a high-frequency induction heating furnace. After vacuuming, it is heated and smelted in an Ar protective atmosphere to obtain a master alloy melt.

[0057] (3) Spray the molten master alloy onto a rotating copper roll for rapid cooling to obtain an amorphous strip.

[0058] (4) Put the amorphous strip in a vacuum annealing furnace (the atmosphere is 80v%NH 3 +20v%H 2 , the total pressure is 300Pa), annealed for 10min at a temperature of 350°C, a...

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Abstract

The invention relates to a SmFeB series amorphous soft magnetic alloy material, which belongs to the technical field of magnetic materials. The SmFeB series amorphous soft magnetic alloy material of the present invention forms an amorphous soft magnetic alloy material by melting and rapidly cooling Fe-based alloys including Sm, Co, B, and Si; the Fe-based alloy contains 3.5 to 11.8 at% Sm, 1.5~5.0at% Co, 5.8~15.0at% B, 5.0~15.0at% Si, and more than 60at% Fe, also provides the above SmFeB series amorphous soft magnetic alloy materials Preparation. The SmFeB series amorphous soft magnetic alloy material of the present invention has higher saturation magnetic induction intensity, high magnetic permeability, and low hysteresis expansion coefficient, and has good applications in the fields of switching power supplies, communication transformers, magnetic heads, and magnetic sensors. Application prospect.

Description

technical field [0001] The invention relates to the technical field of magnetic materials, more specifically, the invention relates to a SmFeB series amorphous soft magnetic alloy material and a preparation method thereof. Background technique [0002] Soft magnetic alloy is a kind of magnetic alloy material with high permeability and low coercive force in weak magnetic field. Since soft magnetic alloy is mainly applied under AC magnetization conditions, it requires very low power loss. Soft magnetic alloys are widely used in communication, sensing and other technical fields as motors, transformer iron cores, electromagnet stages, etc., and with the development of microelectronics technology, the application of soft magnetic alloy materials in the field of precision electronic components is also increasing Extensive, and the performance requirements for soft magnetic alloy materials are also increasing. [0003] In order to meet the needs of different applications, a wide v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02B22D11/06C21D1/26C21D1/74H01F1/153
CPCB22D11/0611C21D1/26C21D1/74C22C33/003C22C45/02C22C2200/02H01F1/15308H01F1/1535
Inventor 张鹏
Owner 华麟津磁(天津)科技有限公司
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