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A nickel-copper-zinc ferrite and its making method

A technology of nickel-copper-zinc ferrite and its manufacturing method, which is applied in the field of nickel-zinc ferrite and its preparation, and can solve the problem of miniaturization, mobility, integration and multi-functional development of ferrite material electronic equipment, etc. problems, to achieve the effect of excellent microstructure, uniform grain size and wide temperature working range

Inactive Publication Date: 2008-08-06
RUYUAN DONGYANGGUANG MAGNETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the comprehensive properties of the ferrite materials produced by the above-mentioned prior art cannot really promote the development of electronic equipment in the direction of miniaturization, mobility, integration and multi-function.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 49.5mol% Fe 2 o 3 , 14.3 mol% NiO, 30.2 mol% ZnO and 6.0 mol% CuO. After mixing the above raw materials, put them into a sand mill and stir them to control the average particle size to 1.00μm±0.20μm. After one spray, pre-fire at 880°C±10°C with an electric rotary kiln. Then the calcined material is put into a sand mill for secondary sand grinding. During the sand grinding process, pure water, dispersant and defoamer are added, and additives are added. Relative to the total amount of the main components, the content of each substance in the additives is The weight percentage content is respectively: V 2 o 5 0.01wt%, MoO 3 0.01wt%, TiO 2 0.02wt%, and the average particle size Φ of the sand mill is controlled to be 1.00μm±0.10μm. Finally, secondary spraying is carried out to obtain nickel-zinc ferrite particle powder.

[0030] Take the granular material and press it into a ring magnetic core of φ25mm×φ15mm×7.5mm, and the molding density is 3.20±0.20g / cm 3 , s...

Embodiment 2

[0033] The composition ratio and process steps are basically the same as in Example 1, and the subcomponents also include MnCO 3 : 0.60wt%, adding in two times, adding 0.45wt% during the first sanding, and adding 0.15wt% during the second sanding.

Embodiment 3

[0035] Weigh 49.0mol% Fe 2 o 3 , 14.6 mol% NiO, 30.4 mol% ZnO and 5.6 mol% CuO. After mixing the above raw materials, put them into a sand mill and stir them to control the average particle size to 1.00μm±0.20μm. After one spraying, pre-fire at 890℃±10℃ with an electric rotary kiln. Then the calcined material is put into a sand mill for secondary sand grinding. During the sand grinding process, pure water, dispersant and defoamer are added, and additives are added. Relative to the total amount of the main components, the content of each substance in the additives is The weight percentage content is respectively: V 2 o 5 0.02wt%, MoO 3 0.018wt%, TiO 2 0.01wt%, Bi 2 o 3 0.02%, the average particle diameter of the control sand mill Φ is 0.95μm±0.1μm. Finally, secondary spraying is carried out to obtain nickel-zinc ferrite particle powder.

[0036] Take the granular material and press it into a ring magnetic core of φ25mm×φ15mm×7.5mm, and the molding density is 3.20±0.20g...

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Abstract

The invention relates to a nickel-copper-zinc ferrite and a manufacturing method thereof. The ferrite of the invention comprises principal constituents and auxiliary constituents, wherein, the principal constituents are respectively iron oxides, nickel protoxide, zinc oxides and cupric oxides; the contents of the principal constituents calculated by respective reference substances are that: 48 mol percent to 50 mol percent Fe2O3, 13 mol percent to 16 mol percent NiO, 29 mol percent to 31.5 mol percent ZnO and 4.5 mol percent to 6.5 mol percent CuO; the auxiliary constituents comprise vanadium oxides, molybdenum oxides and titanium oxides; compared with the gross of the principal constituents, the total content of the auxiliary constituents calculated by respective reference substances V2O5, MoO3 and TiO2 is 0.01 weight percent to 0.08 weight percent. The nickel-copper-zinc ferrite has higher Curie temperature and high initial permeability, high saturation magnetic flux density and low loss under the condition of wide-temperature range, thereby comprehensive performance requirements of development of electric equipment towards directions of miniaturization, mobilization, integration and multifunction can be better met.

Description

technical field [0001] The invention relates to a nickel-zinc ferrite and a preparation method thereof, more specifically, the invention relates to a nickel-copper-zinc ferrite with high magnetic flux density, high Curie temperature, high magnetic permeability and low loss and its preparation method. Background technique [0002] In many electrical equipment, the transformer occupies a large volume, and the power loss of the transformer also accounts for a considerable part of the overall loss of the electrical appliance. In terms of the volume and energy consumption of the transformer, the soft ferrite magnetic material plays an important role. important role. As power transformers, office automation, communications and other electronic equipment are increasingly becoming thinner, lighter, mobile, integrated and multi-functional, the market demand for transformers with smaller volume but higher efficiency will be great; correspondingly Ferrite magnetic materials with supe...

Claims

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Application Information

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IPC IPC(8): H01F1/34H01F1/36C04B35/26C04B35/622
CPCC04B35/265C04B35/62655C04B35/64C04B2235/3232C04B2235/3239C04B2235/3256C04B2235/3272C04B2235/3279C04B2235/3281C04B2235/3284
Inventor 傅膑孟樯范仲康盘良三曹祖强
Owner RUYUAN DONGYANGGUANG MAGNETIC MATERIAL
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