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Process for mfg, 18k manganese zine iron oxygen body magnetic powder magnetic core

A technology of manganese zinc ferrite and its manufacturing method, which is applied in the direction of the magnetism of inorganic materials, can solve difficult problems and achieve the effect of improving the frequency characteristics and making the manufacturing method scientific and reasonable

Inactive Publication Date: 2007-08-22
YUXING ELECTRONICS MATERIAL ZIBO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still quite difficult to use the co-precipitation process to develop and produce high magnetic permeability materials to raise the magnetic permeability to a higher level and make the magnetic permeability reach 18000 (that is, 18K), which needs further research and discussion.

Method used

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  • Process for mfg, 18k manganese zine iron oxygen body magnetic powder magnetic core
  • Process for mfg, 18k manganese zine iron oxygen body magnetic powder magnetic core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The manufacturing method of the 18k MnZn ferrite magnetic powder magnetic core of the present invention comprises batching, dissolving, precipitating, pre-burning, pulverizing, molding and firing, and the specific technological process is:

[0025] Fe 2 o 3 52.5%, MnO 26.5% and ZnO 21.0% for batching, iron sheets, zinc ingots, and electrolytic manganese were dissolved in dilute sulfuric acid in sequence to obtain a working solution. The weight ratio of sulfuric acid to water in dilute sulfuric acid was 1:6.6, molar The concentration is 2.6 mol%.

[0026] Inject the working solution into the precipitant composed of ammonium bicarbonate solution and ammonia solution for precipitation. The density of the ammonium bicarbonate solution is 1.41g / ml, the ratio of the working solution to the ammonium bicarbonate solution is 1:1, and the density of the ammonia solution 0.920g / ml, the ratio of the working solution to the ammonia solution is 1:0.15; the pH value of the solution...

Embodiment 2

[0041] The manufacturing method of the 18k MnZn ferrite magnetic powder magnetic core of the present invention comprises batching, dissolving, precipitating, pre-burning, pulverizing, molding and firing, and the specific technological process is:

[0042] Fe 2 o 3 53%, MnO 26% and ZnO 21% in batching proportions, iron sheets, zinc ingots, and electrolytic manganese were dissolved in dilute sulfuric acid in sequence to obtain a working solution. The weight ratio of sulfuric acid to water in dilute sulfuric acid was 1:6.7.

[0043] Inject the working solution into the precipitant composed of ammonium bicarbonate solution and ammonia solution for precipitation. The density of the ammonium bicarbonate solution is 1.4g / ml, the ratio of the working solution to the ammonium bicarbonate solution is 1:1, and the density of the ammonia solution 0.920g / ml, the ratio of the working solution to the ammonia solution is 1:0.15; the pH value of the control solution is 6.9.

[0044] The sed...

Embodiment 3

[0057] The manufacturing method of the 18k MnZn ferrite magnetic powder magnetic core of the present invention comprises batching, dissolving, precipitating, pre-burning, pulverizing, molding and firing, and the specific technological process is:

[0058] Fe 2 o 3 52.8%, MnO 25.7% and ZnO 21.5% in batching proportions, iron sheets, zinc ingots, and electrolytic manganese were dissolved in dilute sulfuric acid in sequence to obtain a working solution. The weight ratio of sulfuric acid to water in dilute sulfuric acid was 1:6.8.

[0059] Inject the working solution into the precipitant composed of ammonium bicarbonate solution and ammonia solution for precipitation. The density of the ammonium bicarbonate solution is 1.42g / ml, the ratio of the working solution to the ammonium bicarbonate solution is 1:1, and the density of the ammonia solution 0.9224g / ml, the ratio of the working solution to the ammonia solution is 1:0.15; the pH value of the control solution is 6.8-7.0.

[0...

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Abstract

The invention relates to manufacture method for 18k manganese-zinc ferrite magnetic powder magnetic core that includes the steps of mixing, solving, depositing, pre-firing, crushing, molding, and sintering. The manganese-zinc ferrite magnetic powder magnetic core has the feathers that magnetic permeability could reach to 18K, Curie temperature could reach to 120 degree centigrade, and the frequency could reach 100KHz. It could satisfy the request on communication, digital technology or network technology.

Description

technical field [0001] The invention relates to a method for manufacturing an 18k MnZn ferrite magnetic powder core, belonging to the technical field of magnetic materials. Background technique [0002] High-permeability ferrite magnetic powder and magnetic core are essential electronic components for miniaturization and lightening of inductors, filters, pulse transformers and other products in electronic equipment such as program-controlled communication, digital technology, and network communication color TVs. Material. The goal of continuously improving the initial magnetic permeability value in magnetic materials has always been the pursuit of engineers and manufacturers engaged in this profession. my country has used the traditional oxide method to develop high magnetic permeability materials for more than 40 years. Up to now, the high magnetic permeability materials produced by the oxide method can only reach about 10,000, and the performance indicators of the materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/34C04B35/26C04B35/622C04B35/64
Inventor 张法忠王孚亮董汉文
Owner YUXING ELECTRONICS MATERIAL ZIBO
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