High-efficiency soft magnetic material and method for producing the same

A soft magnetic material and high-efficiency technology, applied in the fields of inorganic material magnetism, inductance/transformer/magnet manufacturing, electrical components, etc., can solve the problems of neglecting mechanical properties and electrical properties, components and processes and only pursuing magnetic permeability and eddy current loss. , to achieve the effects of good soft magnetic properties and electrical properties, high magnetic permeability, and improved magnetic efficiency

Inactive Publication Date: 2008-08-20
GRIREM ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composition and process of the invention only pursue the magnetic permeability and eddy current loss, ignoring the mechanical and electrical properties

Method used

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  • High-efficiency soft magnetic material and method for producing the same
  • High-efficiency soft magnetic material and method for producing the same
  • High-efficiency soft magnetic material and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0025] Composition is 90% Fe-Ni-Cu powder and 10% Mn-Zn ferrite (the composition of Fe-Ni-Cu is as follows: Ni50wt%, Fe46wt%, Cu 4wt%, the composition of Mn-Zn ferrite is as follows : MnO15at%, ZnO15at%, Fe 2 o 3 70at%), using the cold pressing and then sintering process, firstly, mix 90% Fe-Ni-Cu powder and 10% Mn-Zn ferrite powder evenly and press them on the press molding machine, during the cold pressing process The added pressure is 20MPa; and then sintered in the sintering furnace, vacuumize to 10 -3 Below Pa, fill with hydrogen of 122Pa, pre-fire at 450°C for 3h, then sinter at 900°C, 1000°C, 1100°C, 1200°C for 3h in a hydrogen atmosphere, then cool to 200°C with the furnace; then anneal When processing and annealing, first evacuate to 10 -3 Below Pa, fill with hydrogen at 100 Pa, anneal at 1100°C for 3 hours in a hydrogen atmosphere, and then chill to room temperature; finally test the soft magnetic properties, electrical properties and mechanical properties of the ...

no. 2 Embodiment

[0030] Composition is 80% Fe-Ni-Nb powder and 20% Ni-Zn ferrite (the composition of Fe-Ni-Nb is as follows: Ni49wt%, Fe49wt%, Nb2wt%, the composition of Ni-Zn ferrite is as follows: NiO30at%, ZnO20at%, Fe 2 o 3 50at%), using cold pressing and then sintering process, firstly, 80% Fe-Ni-Nb powder and 20% Ni-Zn ferrite powder are mixed evenly and then pressed on the press molding machine, during the cold pressing process The added pressure is 20MPa; and then sintered in the sintering furnace, vacuumize to 10 -3 Below Pa, fill with hydrogen of 122Pa, pre-fire at 450°C for 3h, then sinter at 900°C, 1000°C, 1100°C, 1200°C for 3h in a hydrogen atmosphere, then cool to 200°C with the furnace; then anneal When processing and annealing, first evacuate to 10 -3 Below Pa, fill with 100Pa hydrogen, anneal at 1100°C for 3 hours in a hydrogen atmosphere, and then chill to room temperature; finally test the soft magnetic properties, electrical properties and mechanical properties of the sa...

no. 3 Embodiment

[0034] Fe-Ni-Cu powder of different proportions and Mn-Zn ferrite powder (the composition of Fe-Ni-Cu is as follows: Ni50wt%, Fe26wt%, Cu 4wt%, the composition of Mn-Zn ferrite is as follows: MnO15at% , ZnO15at%, Fe 2 o 3 70at%) is formed by hot-pressing process. First, hot-press the uniformly mixed soft magnetic composite magnetic powder at 930°C for 0.5h. During the hot-pressing process, the argon gas filled in is 100Pa, and the added pressure is 20MPa; then annealing is performed. , when annealing, first vacuum to 10 -3 Below Pa, fill with 100Pa hydrogen, anneal at 1100°C for 3 hours in a hydrogen atmosphere, and then chill to room temperature; finally test the soft magnetic properties, electrical properties and mechanical properties of the samples, and the results are shown in Table 3.

[0035] Table 3 Performance of different composition samples

[0036]

[0037]

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Abstract

The invention relates to a highly efficient soft magnetic material and the preparing method thereof. The soft magnetic material is composed of metal soft magnetic material and soft magnetic ferrite, the metal soft magnetic material is composed of at least one selected from Fe-Ni-Me system (Me is one or more than two selected form Cu, Cr, Nb, V, W, Si, Pd, Zn, Al, Ti and Mn), Fe-Co system, Fe-Co-V system, Fe-Al system and Fe-Al-Me system (Me is one or more than two selected form Co, Cr and Mo), the soft magnetic ferrite is composed of at least one selected form Mn-Zn system, Ni-Zn system, Li-Zn system, Cu-Zn system and Mg-Zn system soft magnetic ferrites. The preparing method of the soft magnetic material comprises the steps of: cold pressing, and sintering, hot pressing or spark plasma sintering. The soft magnetic material does not have the drawbacks of low resistivity of the metal soft magnetic and low magnetic strength of the ferrite, as well as keeps the superior properties of the metal soft magnetic and low magnetic strength of the ferrite.

Description

technical field [0001] The invention belongs to the field of magnetic materials, and relates to a composition and a preparation method of a soft magnetic material composed of metal soft magnetic powder and soft ferrite. Background technique [0002] The commonly used soft magnetic materials mainly include electrical pure iron, silicon steel sheets, iron-nickel alloys, ferrites, and amorphous and nanocrystalline materials. We have carried out practical applications on electrical pure iron, silicon steel sheet, iron-nickel alloy, ferrite and amorphous. The research shows that the existing magnetic permeable materials are difficult to meet the requirements of mechanical properties, magnetic properties and electrical properties at the same time. . [0003] Electrical pure ferromagnetic properties and mechanical properties are excellent (high magnetic permeability, high saturation magnetic induction (~2T), high mechanical strength), but the electrical properties are poor (low re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/36H01F41/02B22F3/12
Inventor 于敦波杨红川胡权霞徐静袁永强李世鹏
Owner GRIREM ADVANCED MATERIALS CO LTD
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