Microcrystalline soft magnetic powder material and preparation method thereof

A technology of soft magnetic powder and microcrystals, which is applied in the direction of magnetic materials, inorganic materials, magnetic objects, etc., can solve the problems of high alloy cost and complicated process, achieve the effects of shortened production cycle, simple production and preparation process, and improved magnetic permeability

Inactive Publication Date: 2009-11-04
南京深宁磁电有限公司
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  • Description
  • Claims
  • Application Information

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  • Microcrystalline soft magnetic powder material and preparation method thereof

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Embodiment 1

[0019] The weight percentage of microcrystalline soft magnetic powder material composition of the present invention is: 4.5% Al, 7% Si, 0.1% Cu, 0.1% Zr, 0.5% B, 0.05% Pr, 0.05% La, 0.01% P, the rest is Fe.

[0020] Preparation process: First, the ingredients are prepared according to the above ingredients. The purity of the raw materials Fe, Al, Cu, Zr, Si, B, Pr, and La is greater than 99.9%. P is added in the form of an iron-phosphorus master alloy. The percentage by weight is 18%; the prepared material is melted in a vacuum quick-setting sheet casting furnace, and the melting temperature is 1500°C. After obtaining the master alloy solution, the alloy liquid is poured on the water-cooled round roller rotating in the furnace, and the rotation line of the roller is The speed is 1-5m / s, the molten metal is rapidly cooled and solidified, so that the liquid state is frozen to form a thin slice with a microcrystalline structure, the thickness of the thin slice is 0.5-1.2mm, and t...

Embodiment 2

[0022] The weight percentage of the microcrystalline soft magnetic powder material composition of the present invention is: 6.5% Al, 12% Si, 0.2% Cu, 0.5% Zr, 2.5% B, 0.1% Pr, 0.1% La, 0.05% P, and the rest is Fe .

[0023] Its preparation process is with embodiment one.

Embodiment 3

[0025] The weight percentage of microcrystalline soft magnetic powder material composition of the present invention is: 5% Al, 9% Si, 0.1% Cu, 0.3% Zr, 1% B, 0.08% Pr, 0.07% La, 0.03% P, the rest is Fe.

[0026] The preparation process is the same as in Example 1.

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Abstract

The invention provides a microcrystalline soft magnetic powder material with high saturation magnetization. The material has high magnetic conductivity, is made of common raw materials and has low manufacturing cost. The invention also provides a preparation method for the microcrystalline soft magnetic powder material. The method has simple process and is suitable for industrialized mass production. The microcrystalline soft magnetic powder material comprises the following components by weight: 4 to 7 percent of Al, 7 to 12 percent of Si, 0.05 to 0.2 percent of Cu, 0.1 to 0.5 percent of Zr, 0.5 to 2.5 percent of B, 0.05 to 0.1 percent of Pr, 0.05 to 0.1 percent of La, 0.01 to 0.05 percent of P and the balance of Fe.

Description

1. Technical field [0001] The invention relates to a microcrystalline soft magnetic powder material with high saturation magnetization and a preparation method of the magnetic powder, belonging to the technical field of magnetic materials. 2. Background technology [0002] Sentinel is a soft magnetic alloy widely used in industry. In order to further improve the performance, people continue to propose new alloy designs. [0003] Application No. 200710160244.6 proposes a method for preparing a sendust alloy with high saturation magnetization. The method comprises the following steps: 1) using Fe, Al, Si and Co with a purity greater than 99.9wt% as raw materials and melting them in an intermediate frequency vacuum induction furnace to obtain a master alloy; 2) putting the melted master alloy into a rapid quenching device , the alloy ingot is remelted under the protection of high-purity inert gas and then quickly poured onto a high-speed rotating roller to obtain a rapidly co...

Claims

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Application Information

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IPC IPC(8): H01F1/147H01F1/20C22C1/03B22F9/00
Inventor 王玲赵浩峰张帅徐胜宏陈文龙
Owner 南京深宁磁电有限公司
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