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A kind of preparation method of manganese zinc soft magnetic ferrite material with four high characteristics

A manganese-zinc soft magnet, characteristic technology, applied in the direction of inductance/transformer/magnet manufacturing, magnetic core manufacturing, inorganic material magnetism, etc., can solve the problems of high magnetic permeability, difficult to achieve the most satisfactory, etc., to achieve high magnetic permeability, Good spectral stability and high sintering density

Active Publication Date: 2021-10-19
南京中电熊猫磁电科技有限公司
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Problems solved by technology

Due to the strict requirements for the application conditions of manganese-zinc soft ferrite materials, manganese-zinc soft ferrite materials are required to have high magnetic permeability, high Curie temperature, high saturation magnetic flux density, and at the same time maintain The stability of magnetic permeability, but the actual situation is difficult to achieve the most satisfactory parameters in all aspects due to the mutual restraint and influence of various components in the formula

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  • A kind of preparation method of manganese zinc soft magnetic ferrite material with four high characteristics

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Embodiment 1

[0025] A preparation method of a four-high-characteristic manganese-zinc soft ferrite material, comprising the following steps:

[0026] (1) Ingredients: take Fe 2 o 3 , MnO and ZnO with the main ingredients, the molar ratio is (51.5-52.5): (30.5-31.5): (16.5-17.5);

[0027] (2) Matching auxiliary materials: ZrO equivalent to 0.005-0.010wt% of the main material 2 , 0.006-0.012wt% Nb 2 o 5 , 0.013-0.018wt% CaCO 3 , 0.005-0.001wt% SiO 2 , 0.035-0.05wt% SnO 2 ;

[0028] (3) Pre-burning: Add appropriate amount of deionized water to the main ingredients prepared in step (1), fully mix and stir, then use gadolinium chip machine to make 2-4mm thick blanks, and pre-fire, the pre-burning temperature is 870 -920℃, pre-burning time is 1-2 hours;

[0029] (4) Superfine grinding of auxiliary materials: the auxiliary materials prepared in step (2) except SiO 2 In addition, add an appropriate amount of deionized water, carry out ball milling of auxiliary materials, and add SiO2 whe...

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Abstract

The invention relates to a preparation method of a manganese-zinc soft magnetic ferrite material with four high characteristics, comprising the following steps: preparing main materials, preparing auxiliary materials, mixing and pre-calcining main materials, secondary ball milling after mixing main and auxiliary materials, and spray drying to produce The granular material is pressed according to the customer's requirements, and the atmosphere is controlled and sintered to obtain a qualified magnetic core product. The invention achieves the effect of improving the uniformity of crystallization and effectively increasing the crystal grain by rationally deploying the main components and adding ultra-fine crushed auxiliary materials. The uniform distribution of the magnetic core components, the reduction of pores, and the high sintering density have the characteristics of high magnetic permeability, high Curie temperature, high magnetic flux density, and high inductance stability in the wide frequency range of 0.5kHz to 1MHz.

Description

technical field [0001] The invention relates to the field of soft ferrite, in particular to a method for preparing a manganese-zinc soft ferrite material with four high characteristics. Background technique [0002] Manganese-zinc soft ferrite belongs to a large category of soft ferrite, and is currently widely used in electronic fields such as filters, inductors, transformers, and power converters. Due to the strict requirements for the application conditions of manganese-zinc soft ferrite materials, manganese-zinc soft ferrite materials are required to have high magnetic permeability, high Curie temperature, high saturation magnetic flux density, and at the same time maintain The stability of the magnetic permeability, but the actual situation is difficult to achieve the most satisfactory parameters in all aspects due to the mutual restraint and influence of various components in the formula. Contents of the invention [0003] In order to solve the above problems and ov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/38H01F1/36H01F41/02
CPCC04B35/2633C04B2235/3244C04B2235/3251C04B2235/3293C04B2235/3418C04B2235/442C04B2235/48C04B2235/6562C04B2235/96H01F1/36H01F41/0206H01F41/0246
Inventor 周海波张泂沈军刚刘浩松
Owner 南京中电熊猫磁电科技有限公司
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