Manufacturing method of iron-based amorphous soft magnetic alloy spherical powder

A soft magnetic alloy and spherical powder technology, which is applied in the direction of magnetic materials, magnetic objects, electrical components, etc., to achieve the effect of simple process, good surface quality and improved performance

Inactive Publication Date: 2015-04-01
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method does not involve the preparation of amorphous spherical powder, inclu

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  • Manufacturing method of iron-based amorphous soft magnetic alloy spherical powder
  • Manufacturing method of iron-based amorphous soft magnetic alloy spherical powder
  • Manufacturing method of iron-based amorphous soft magnetic alloy spherical powder

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Preparation of Amorphous Soft Magnetic Alloy Metallic Glass Microspheres. First, smelting to obtain a soft magnetic alloy (Fe 79 Si 6 B 13.3 C 1.7 , subscript atomic percent) Then, mechanically crush the soft magnetic alloy to obtain a powder with an average size of about 30 μm as a raw material. Take 1 gram of soft magnetic alloy powder and flake graphite powder with a size of about 1 μm, and mix them uniformly by mechanical stirring at a ratio of 1:1 by weight.

[0026] Put the mixed soft magnetic alloy / graphite mixed powder into a quartz tube, and the quartz tube is evacuated to 6×10 -3 Pa, pass argon gas to 0.06MPa and then seal the tube, put the quartz tube with alloy / graphite mixed powder protected by argon into a heat treatment furnace heated to 1250°C, keep it warm for 5 minutes, and put the quartz tube protected by argon The quartz tube of alloy / graphite mixed powder is quenched into water to achieve rapid cooling.

[0027] Alloy / graphite powder is soaked...

Embodiment 2

[0029] Preparation of Amorphous Soft Magnetic Alloy Metallic Glass Microspheres. First, soft magnetic alloy powder (Fe 78 Si 9 B 13 , subscript atomic percent) as raw material. Take 1 gram of soft magnetic alloy powder and nano-graphite in a ratio of 5:1 by weight, and mix them uniformly by mechanical stirring.

[0030] Put the mixed soft magnetic alloy / graphite mixed powder into a quartz tube, and the quartz tube is evacuated to 6×10 -3 Pa, blow argon to 0.05MPa and then seal the tube, put the quartz tube filled with FeSiB alloy / graphite mixed powder protected by argon into a heat treatment furnace heated to 1220°C, keep it warm for 3 minutes, and put the quartz tube filled with argon Gas-shielded FeSiB alloy / graphite mixed powder quartz tube is quenched into water or other liquids (such as quenching liquid formula for metal treatment) to achieve rapid cooling.

[0031] Soak the iron-silicon-boron alloy / graphite powder in alcohol, and obtain the iron-silicon-boron metal ...

Embodiment 3

[0033] Preparation of Amorphous Soft Magnetic Alloy Metallic Glass Microspheres. First, smelting to obtain a soft magnetic alloy (Fe 77 Cu 1 Si 9 B 13 , subscript atomic percent). Then, the soft magnetic alloy powder is mechanically crushed as a raw material. Take 1 gram of soft magnetic alloy powder and graphene, and mix them uniformly by mechanical stirring at a ratio of 1:1 by weight.

[0034] Put the mixed soft magnetic alloy / graphite mixed powder into a quartz tube, and the quartz tube is evacuated to 6×10 -3 Pa, pass argon to 0.06MPa and then seal the tube, put the quartz tube with alloy / graphite mixed powder protected by argon into a heat treatment furnace heated to 1200°C, keep it warm for 5 minutes, and put the quartz tube protected by argon The quartz tube of alloy / graphite mixed powder is quenched into water to achieve rapid cooling.

[0035] The alloy / graphite powder is soaked in alcohol, and the metallic glass microspheres are obtained by ultrasonic cleanin...

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Abstract

The invention provides a manufacturing method of iron-based amorphous soft magnetic alloy spherical powder. The manufacturing method includes the steps of 1, preparing soft magnetic alloy powder; 2, well mixing the soft magnetic alloy power with carbon powder or ceramic powder; 3, melting soft magnetic alloy which quickly solidifies into metal spheres, by high-temperature heat treatment at a temperature reaching to a melting temperature of the soft magnetic alloy, especially a temperature in a range 40 to 100 DEG C greater than the melting temperature of the soft magnetic alloy; 4, separating the carbon powder or the ceramic powder to acquire micron and nano amorphous soft magnetic alloy spherical powder. The manufacturing method has the advantages that the process is simple, manufacturing cost is low, and the method is environment friendly and suitable for large-scale production of the amorphous soft magnetic alloy spherical powder.

Description

technical field [0001] The invention belongs to the field of soft magnetic metal functional materials and powder metallurgy, and in particular relates to a method for manufacturing iron-based amorphous soft magnetic alloy spherical powder. Background technique [0002] Compared with crystalline alloys, amorphous soft magnetic alloys have better comprehensive magnetic properties, such as higher saturation magnetization and permeability, and lower loss. At the same time, amorphous soft magnetic alloys also have unique mechanical properties, oxidation resistance and corrosion resistance, and are mainly used in distribution transformer iron cores, current transformer iron cores, structural electromagnetic shielding materials, composite materials and shielding coating materials and other fields. [0003] At present, as a magnetic powder core and electromagnetic shielding material, the manufacturing of amorphous soft magnetic alloy powder mainly adopts technologies such as rapid ...

Claims

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Application Information

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IPC IPC(8): B22F9/06B22F1/00C22C45/10H01F1/153
Inventor 唐少龙雷成龙程振之黄海富都有为
Owner NANJING UNIV
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