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Soft magnetic ferrite material and preparation method thereof

A technology of soft magnetic ferrite and main crystal phase, which is applied in the manufacture of inductors/transformers/magnets, the magnetism of inorganic materials, and electrical components. It can solve the problems of low magnetic flux density and impact, and achieve reduced loss performance, rich raw materials, and Effect of improving flow resistance performance

Pending Publication Date: 2019-10-11
SHANDONG GREEN TEC MOTOR DRIVEN TECH
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AI Technical Summary

Problems solved by technology

Although the ferrite prepared by the prior art has reduced loss at low frequencies, its magnetic flux density is too low, which affects its use

Method used

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  • Soft magnetic ferrite material and preparation method thereof
  • Soft magnetic ferrite material and preparation method thereof
  • Soft magnetic ferrite material and preparation method thereof

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Embodiment Construction

[0018] The present invention adopts the Fe of analytical purity 2 o 3 , ZnO, CuO as raw materials to prepare the main crystal phase, the purity of the analytically pure Bi 2 o 3 、Al 2 o 3 Doping, the specific implementation method is as follows: weigh the ingredients according to Table 1, put the mixture into the stirring ball mill tank, according to the mass ratio of material ball to water 1:2:0.8, ball mill for 2 to 6 hours, and the speed is 260 rpm minute. The particle size is controlled at D 50 = within 1.2μm, press-filter the ball-milled material, dry in an oven at 100°C, pass through a 40-mesh sieve after crushing, pre-fire in a box-type resistance furnace at 870°C / 4H, pass through a 40-mesh sieve after crushing Standby; add doping phase material Bi according to the ratio in Table 1 2 o 3 、Al 2 o 3 Carry out secondary ball milling, press filtration, drying, pass through an 80-mesh sieve after crushing, add PVA to granulate, and use a manual press at 20MPa to fo...

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Abstract

The invention discloses a soft magnetic ferrite material and a preparation method thereof, belongs to the technical field of electronic information function materials and devices. The soft magnetic ferrite material is prepared by using oxides of iron, zinc and copper as main components, using bismuth and aluminum as doping elements, and using a solid-phase reaction method, and prepared through working procedures of ball-milling, drying, pre-sintering, secondary-ball-milling, drying, smashing and sieving and the like. The soft magnetic ferrite material has the characteristics of low cost, higher self-resonant frequency, good current resistance and a low temperature change rate and the like, can be used for preparing a large-current magnetic bead, and reducing silver consumption, used for apower inductor interlayer, and capable of solving a problem caused by using ceramic powder that co-firing cannot be performed well.

Description

technical field [0001] The invention belongs to the technical field of electronic information functional materials and devices, and specifically relates to a soft magnetic ferrite material with the characteristics of low cost, high self-resonant frequency, good current resistance characteristics and low temperature change rate, and a preparation method thereof . It can be used to make high-current magnetic beads to reduce silver consumption; it can be used in the interlayer of power inductors to solve the problem of poor co-firing caused by the use of ceramic powder. Background technique [0002] Definition of soft magnetic material: a magnetic material with low coercive force and high magnetic permeability. Soft magnetic materials are easy to magnetize and demagnetize, and are widely used in electrical and electronic equipment. The most widely used soft magnetic materials are iron-silicon alloys (silicon steel sheets) and various soft ferrites. The characteristics of sof...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622H01F1/36H01F41/00
CPCC04B35/265C04B35/622C04B2235/3272C04B2235/3281C04B2235/3284H01F1/36H01F41/00
Inventor 王明东戴文金
Owner SHANDONG GREEN TEC MOTOR DRIVEN TECH
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