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Gas atomization preparation method of iron-silicon-chromium-gallium-indium-nitrogen alloy soft magnetic powder

A soft magnetic powder, gallium indium nitrogen technology, applied in the direction of metal processing equipment, transportation and packaging, etc., can solve the problems of low rust resistance and loss resistance, low tap density, low resistivity, etc., to achieve improved resistivity, Effect of reducing inclusion content and improving loss characteristics

Pending Publication Date: 2022-01-11
泉州市鑫航新材料科技有限公司
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  • Application Information

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Problems solved by technology

[0004] The invention provides a gas atomization preparation method of iron-silicon-chromium-gallium-indium-nitrogen alloy soft magnetic powder to solve the problems of low tap density, low resistivity, poor electrical resistance, rust resistance and resistance to existing metal soft magnetic powders. Defects such as low loss

Method used

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Embodiment Construction

[0018] The specific implementation manner of the embodiment of the present invention is described below.

[0019] A gas atomization preparation method of iron silicon chromium gallium indium nitrogen alloy soft magnetic powder, comprising the steps of:

[0020] 1) Add the soft magnetic alloy powder raw material containing iron, silicon, chromium, gallium and indium into the intermediate frequency induction furnace, and smelt it with vacuum and nitrogen protection to obtain the alloy liquid.

[0021] Further, iron, chromium, and silicon are first added to the intermediate frequency induction furnace in sequence, the furnace body is sealed, the crucible of the intermediate frequency induction furnace is heated, the furnace body is evacuated to 1-100Pa, and nitrogen is filled to 100-102KPa; the raw materials in the induction furnace are completely Melting, and when the temperature reaches 1640-1660 degrees, add gallium and indium; after sedation and slag removal, alloy liquid is ...

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Abstract

The invention relates to a gas atomization preparation method of iron-silicon-chromium-gallium-indium-nitrogen alloy soft magnetic powder. The preparation method comprises the following steps: 1) adding a soft magnetic alloy powder raw material containing iron, silicon, chromium, gallium and indium into a medium-frequency induction furnace, and smelting by vacuumizing and nitrogen protection to obtain alloy liquid; and (2) under the protection condition of nitrogen, pouring the alloy liquid into an atomizing tower, in a pouring process, spraying nitrogen and ammonia mixed gas through high-pressure at a supersonic speed to act on alloy liquid column flow, to disperse an alloy liquid column flow, and break and cool into nearly-spherical alloy soft magnetic powder, and meanwhile, forming a compact oxidation film and a compact nitride film on the surface of the alloy soft magnetic powder. The method can be used for preparing the alloy soft magnetic powder with high tap density, high surface resistivity and high loss characteristics, and the alloy soft magnetic powder can be widely applied as a powder raw material of an inductor device.

Description

technical field [0001] The invention relates to the technical field of soft magnetic alloy powder, and more specifically refers to a gas atomization preparation method of soft magnetic powder of iron silicon chromium gallium indium nitrogen alloy. Background technique [0002] At present, metal soft magnetic powder is usually mainly made of iron silicon chromium, which is made by chemical reaction method, melt atomization method, mechanical crushing method and point solution deposition method. Among them, alloy powder is prepared by melt atomization method It has the same chemical composition as the established molten alloy, and also has a typical rapid solidification structure, a wide range of alloy composition, good sphericity of powder shape, and wide particle size distribution. It is widely used in the production of metal soft magnetic powder. [0003] However, with the development of science and technology, the application of electronic components is becoming wider and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08B22F1/065B22F1/16C22C38/34
CPCB22F9/082C22C38/34C22C38/002C22C38/001B22F2009/0824B22F2009/0848
Inventor 王冲黄莹祥
Owner 泉州市鑫航新材料科技有限公司