Heat treatment method of iron-based nanometer amorphous magnetic core material

Abstract

This proposal discloses a heat treatment method for an iron-based nano-amorphous magnetic core material in the technical field of nano-amorphous alloy preparation, including the following steps: 1: Put the iron-based nano-amorphous magnetic core material into a vacuum chamber, Heat treatment of the nano-amorphous magnetic core material; 2: uniformly heat the iron-based nano-amorphous magnetic core material placed in the vacuum chamber from room temperature to 290~310°C, and keep the temperature at a constant temperature for 50~70min; 3: After completing the second step, continue Heat the iron-based nano-amorphous magnetic core material to 400~420°C, and keep it at a constant temperature for 60~70 minutes; 4: After completing the third step, continue to heat the iron-based nano-amorphous magnetic core material to 470~490°C, and keep it at a constant temperature of 75 ~85min; 5: After completing 4, continue to heat the iron-based nano-amorphous core material to 520-540°C, and keep the temperature constant for 30-40 minutes; 6: After completing 5, continue to heat the iron-based nano-amorphous core material to 550~560°C, and keep the constant temperature for 110~130min; 7: After completing 6, cool the iron-based nano-amorphous magnetic core material to room temperature. The method can significantly reduce the hysteresis loss of the iron-based nano-amorphous core.

Description

technical field [0001] The invention belongs to the technical field of nano-amorphous alloy preparation, in particular to a heat treatment method for an iron-based nano-amorphous magnetic core material. Background technique [0002] Amorphous and nanocrystalline soft magnetic materials are crystallized after heat treatment to obtain microcrystals with a grain diameter of 10-20nm, hence the name. This alloy almost combines the excellent properties of all amorphous alloys: high saturation magnetic flux density, high initial permeability, low specific loss and good temperature stability. [0003] Iron-based nano-amorphous magnetic core is a kind of magnetic material with excellent performance, which is mainly used in the fields of power system, computer network, multimedia technology and high-frequency micro-magnetic devices. Hysteresis loss exists in magnetic materials, which is caused by the energy consumed by hysteresis during the repeated magnetization process of ferromagn...

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Problems solved by technology

This part of energy is converted into heat energy, which makes the equipment heat up and the efficiency is reduced. It is a part of the iron loss in the electrical equipment, which is not conducive to the normal operation of the equipment.

[0004] However, in the current production process of iron-based nano-amorphous magnetic cores, in order to reduce the loss of elements, the material is usually heated and cooled by rapid heating and cooling during the heat treatment process of iron-based nano-amorphous magnetic core materials. This treatment method leads to insufficient grain refinement of the obtained magnetic core, and insufficient release of the magnetic properties of the magnetic core itself, which leads to serious hysteresis loss of the iron-based nano-amorphous magnetic core.

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