High-frequency wide-temperature low-loss manganese-zinc ferrite and manufacturing technique thereof

A manganese-zinc ferrite and low-loss technology, which is applied in the field of high-frequency, wide-temperature, low-loss manganese-zinc ferrite and its manufacturing process, can solve the problem of high power loss and achieve the effects of excellent performance, low loss, and energy saving

Active Publication Date: 2013-11-20
JIANGSUSR MAGNETIC MATERIAL & DEVICE ENG TECH RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of high power loss of existing manganese zinc ferrite magnetic materials at hi...

Method used

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  • High-frequency wide-temperature low-loss manganese-zinc ferrite and manufacturing technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Proceed as follows:

[0025] (1) Fe 2 o 3 (52mol%), Mn 3 o 4 (42mol%), ZnO (6mol%) main component and trace component TiO 2 (1000ppm) was added to the sand mill for the first wet grinding and mixing for 30 minutes;

[0026] (2) Step (1) Grind the obtained material through a spray dryer to make granules, and then send it to the rotary kiln for pre-burning at a temperature of 850°C, and pass through the rotary kiln once, and the passing time is generally controlled at 2 to 6 minutes;

[0027] (3) Adding Nb to the material obtained by pre-burning in step (2) 2 o 5 (350ppm) and ZrO 2 (250ppm), carry out the second wet grinding and mixing in a sand mill, and grind to an average particle size of 0.8 to 1.0 microns;

[0028] (4) Add polyvinyl alcohol solution with a concentration of 8wt% to the material obtained by grinding in step (3) according to 10wt% of the absolute dry material, stir for 2 hours, pass through a spray dryer, spray granulate, and the particle s...

Embodiment 2

[0032] Under the same situation as that of Example 1, the raw materials used and the consumption amount are changed to: in step 1), the main component is Fe 2 o 3 (53mol%), Mn 3 o 4 (42mol%), ZnO (5mol%) composition, trace composition Ni 2 o 3 (2000ppm), incorporated V in step 3) 2 o 5 (450ppm) and Ta 2 o 5 (360ppm).

Embodiment 3

[0034] Under the same situation as that of Example 1, the raw materials used and the consumption amount are changed to: in step 1), the main component is Fe 2 o 3 (53mol%), Mn 3 o 4 (42mol%), ZnO (5mol%) composition, trace component Co 3 o 4 (4500ppm), incorporated V in step 3) 2 o 5 (580ppm) and Nb 2 o 5 (300ppm).

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Abstract

The invention discloses a high-frequency wide-temperature low-loss manganese-zinc ferrite which is composed of a main ingredient and a micro ingredient, wherein the main ingredient is composed of 52-55 mol% of Fe2O3, 38-43 mol% of Mn3O4 and 5-9 mol% of ZnO; the micro ingredient is divided into a micro ingredient A and a micro ingredient B; the micro ingredient A is at least one of TiO2, Ni2O3, Co3O4 and SnO2, and the total mass content of the micro ingredient A in the high-frequency wide-temperature low-loss manganese-zinc ferrite is 1000-5000 ppm; and the micro ingredient B is composed of at least two of Nb2O5, ZrO2, CaCO3, Ta2O5, SiO2 and V2O5. Compared with the existing 3F4, the material disclosed by the invention has lower power loss and is more energy-saving under the conditions of 1000-3000 KHz and -30-120 DEG C.

Description

technical field [0001] The invention belongs to the field of manganese-zinc ferrite magnetic materials, and in particular relates to a manganese-zinc ferrite with high frequency, wide temperature and low loss and a manufacturing process thereof. Background technique [0002] With the continuous advancement of power electronics technology, the electronic system is developing in the direction of small and lightweight, multi-functional, flat mount, integrated digital and intelligent, and the high frequency of switching power supply is an important technical approach. For general applications, the requirements for green and high efficiency are getting higher and higher, and more importantly, in order to adapt to the application of different environments around the world, the power supply is required not only to adapt to high temperature environments, but also to adapt to ultra-low temperature environments. To achieve these The goal is that the high frequency and wide temperature...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/38C04B35/622
Inventor 赵新江
Owner JIANGSUSR MAGNETIC MATERIAL & DEVICE ENG TECH RES
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