Amorphous-nanocrystalline composite magnetic power core and production method thereof

An amorphous nanocrystalline, magnetic powder core technology, applied in the direction of inductor/transformer/magnet manufacturing, magnetic materials, magnetic objects, etc., can solve the problem of low saturation magnetic induction intensity and permeability, low magnetic particle content, DC magnetic flux density Low problems, to achieve the effect of improving magnetic properties and mechanical properties, excellent soft magnetic properties, and ensuring insulation effect
CN103559974AActive Publication Date: 2014-02-05QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
Publication Date
2014-02-05

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Abstract

The invention belongs to the field of function materials and particularly relates to an amorphous-nanocrystalline composite magnetic power core and a production method thereof. The amorphous-nanocrystalline composite magnetic power core is mainly made of iron-based amorphous powder, iron-based nanocrystalline powder, organic binder, and insulating agent. The insulating agent is a mixture of inorganic oxide, carbide and nitride. The organic binder and the insulating agent account for 0.5-2wt% and 0.5-4wt% of total weight of the two powders respectively. The production method includes: amorphous strip embrittlement, mechanical breaking for powdering, screening, passivation and insulation coating, die pressing, and heat treatment. The amorphous-nanocrystalline composite magnetic power core has excellent soft magnetic properties, thermal stability and mechanical strength under medium and high frequencies, and can be massively used for various inductive components, such as filters, current regulators and energy storage components, on various switch power modules.
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Description

technical field

[0001] The invention belongs to the field of functional materials, and in particular relates to an amorphous nanocrystalline composite magnetic powder core and a preparation method thereof. Background technique

[0002] Amorphous and nanocrystalline soft magnetic alloys have excellent soft magnetic properties, and their thin strip wound iron core products have been widely used. However, due to the large eddy current loss at high frequencies, it is difficult to use amorphous and nanocrystalline soft magnetic alloy thin strip winding iron cores at high frequencies. Therefore, it is an inevitable trend to use powder metallurgy technology to develop amorphous and nanocrystalline magnetic powder cores under high frequency. Magnetic powder core is a new type of composite electronic material, which is a soft magnetic material formed by mixing and pressing amorphous strip powder and insulating medium. Its preparation process is as attached figure 1 As shown, the s...

Claims

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