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A kind of preparation method of modified iron-silicon-boron soft magnetic powder core with magnetic permeability of 90

A soft magnetic powder core and iron silicon boron technology is applied in the field of preparation of modified iron silicon boron soft magnetic powder core, and achieves the effects of simple method, high density and uniform structure

Active Publication Date: 2016-01-20
QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the above problems, the object of the present invention is to provide a method for preparing a modified iron-silicon-boron soft magnetic powder core with a magnetic permeability of 90, improve the noise defect of the iron-silicon-boron soft magnetic powder core, and improve its high-frequency characteristics

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of the modified FeSiB soft magnetic powder core provided in this embodiment includes the following steps,

[0027] Step 1, embrittlement treatment: heat-treat the iron-silicon-boron amorphous metal strip at 300°C for 2 hours to make it embrittled and easily crushed;

[0028] Step 2, crushing: crushing the brittle amorphous metal strip to obtain amorphous metal powder;

[0029] Step 3, sieving and proportioning: sieve the amorphous metal powder, and then mix it into the first powder with a weight content of 50% passing through -170~+200 mesh, and the weight content of 20% passing through- Powder granules composed of the second powder of 200~+270 mesh and the third powder passing through -270~+325 mesh with a weight content of 30%;

[0030] Step 4, passivation treatment and insulation coating: Pour the proportioned amorphous powder particles into the mixer, stir and mix evenly, then add phosphoric acid solution for passivation effect, the amount ad...

Embodiment 2

[0053] The preparation method of the modified FeSiB soft magnetic powder core provided in this embodiment includes the following steps,

[0054] Step 1, embrittlement treatment: heat-treat the iron-silicon-boron amorphous metal strip at 300°C for 2 hours to make it embrittled and easily crushed;

[0055] Step 2, crushing: crushing the brittle amorphous metal strip to obtain amorphous metal powder;

[0056] Step 3, sieving and proportioning: sieving the amorphous metal powder, and then mixing it into the first powder with a weight content of 20-70% passing through -170-+200 mesh, and a weight content of 10-40 % of the second powder passing through the mesh of -200~+270 and the powder particles composed of the third powder passing through the mesh of -270~+325 with a weight content of 20~40%;

[0057] Step 4, passivation treatment and insulation coating: Pour the proportioned amorphous powder particles into the mixer, stir and mix evenly, then add phosphoric acid solution for p...

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Abstract

Third, screening and ratio; step 4, passivation treatment and insulation cover; step 5, adding a modified agent; step 6, suppressing molding; step 7, annealing and spraying; the preparation method provided by the present invention can improve the method of improvement can improveThe noise defects of iron silicon boron soft magnetic powder cores and improved their high -frequency characteristics.

Description

technical field [0001] The invention belongs to the field of metal soft magnetic material manufacturing, and in particular relates to a method for preparing a modified iron-silicon-boron soft magnetic powder core with a magnetic permeability of 90. Background technique [0002] Since Professor Duwez in the United States invented the rapid quenching process to prepare amorphous alloys in 1960, due to its unique structure, efficient preparation process, excellent material properties and broad application prospects, it has been favored by material scientists and the industry. of special attention. Amorphous magnetic powder core is a new type of composite electronic material, mainly used in switching power supply cores, common-mode inductors, high-frequency inverters and zero-sequence transformers. [0003] At present, the magnetic powder core products mainly include iron silicon boron magnetic powder cores, sendust magnetic powder cores, iron nickel magnetic powder cores, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/02H01F1/147H01F1/24B22F9/04B22F1/02B22F3/02
Inventor 纪杰江志滨王亚娜李维强姜海滨
Owner QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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