High-frequency low-loss MnZn ferrite material and manufacturing method thereof

A technology of ferrite material and manufacturing method, applied in the field of MnZn ferrite material and its manufacturing, can solve the problems of high sintering maximum temperature, deterioration of ferrite performance, lowering production cost and the like, so as to achieve lower sintering temperature and lower production cost, the effect of avoiding abnormal growth

Active Publication Date: 2010-10-13
江门江益磁材有限公司
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Problems solved by technology

But on the other hand, due to SiO 2 and Fe in the main component 2 o 3 Can react to form Fe 2 (SiO 3 ) 3 , and its melting point is 1150°C, which is lower than the sintering temperature of ferrite, so it is prone to abnormal grain growth during sintering, resulting in deterioration of ferrite performance
[0005] Many people have been researching high-frequency low...

Method used

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  • High-frequency low-loss MnZn ferrite material and manufacturing method thereof
  • High-frequency low-loss MnZn ferrite material and manufacturing method thereof
  • High-frequency low-loss MnZn ferrite material and manufacturing method thereof

Examples

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Embodiment 1

[0031] The main component is 54.6mol% Fe with a sand mill 2 O 3 , 37.9mol% Mn based on Mn 3 O 4 It is mixed with 7.5 mol% of ZnO wet mill and evenly placed in a drying box for drying. Using a box-type resistance furnace, the obtained powder was pre-fired at 820°C for 2 hours. Then put the calcined powder into a ball mill, and based on the total weight of the main component, add an auxiliary component: 0.04wt% of CaCO to the obtained powder 3 , 0.006wt% SiO 2 , 0.035wt% of Nb 2 O 5 , 0.10wt% CoO, 0.04wt% V 2 O 5 , 0.06wt% SnO 2 And 0.03wt% TiO 2 ; Then add 66wt% of deionized water, 1wt% of the dispersant, and 1wt% of the defoaming agent based on the total weight of the main component for ball milling. Ball mill the powder to an average particle size of about 1.0±0.2μm; based on the total weight of the powder after ball milling, add 8wt% polyvinyl alcohol solution to the powder, mix and granulate uniformly, and use a pressure of 50-200MPa The pellets are pressed into green sample...

Embodiment 2-8

[0034] The components and sintering temperatures of Examples 2-8 are shown in Table 1 below, and the implementation steps are the same as in Example 1. The magnetic performance test results of the materials prepared in Examples 2-8 are listed in Table 2 below.

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Abstract

The invention provides a high-frequency low-loss MnZn ferrite material, which comprises main components and auxiliary components, wherein the main components are 53-56 mol percent of ferric oxide, 34-41 mol percent of manganese oxide and 6-10 mol percent of zinc oxide, the content of manganese oxide is measured by Mn; the auxiliary components are at least three selected from CaCO3, SiO2, Nb2O5, CoO, V2O5, SnO2 and TiO2, and based on the total weight of the main components, the auxiliary components comprise: 0.02-0.08 weight percent of CaCO3, 0.002-0.01 weight percent of SiO2, 0.02-0.06 weight percent of Nb2O5, 0.03-0.20 weight percent of CoO, 0.01-0.05 weight percent of V2O5, 0-0.20 weight percent of SnO2 and 0-0.10 weight percent of TiO2. The invention also provides a manufacturing method of the high-frequency low-loss MnZn ferrite material.

Description

Technical field [0001] The invention relates to a MnZn ferrite material and a manufacturing method thereof, and in particular to a high-frequency low-loss MnZn ferrite material and a manufacturing method thereof. Background technique [0002] With the rapid development of television, computer and various communication industries, the requirements for various inductors, filters, and transformer core materials tend to be high-frequency and low-loss. Therefore, major companies in the world are competing to conduct research. Over the years, power materials have been increased from PC30 and PC40 to PC44 with lower power consumption and PC50 with higher frequency. Such high-performance products are widely used in high-definition digital televisions, high-resolution computer monitors, pulse code modulation digital communications (PCM), and WDM and DWDM optical fiber communications equipment. [0003] MnZn power ferrite is mainly used as transformer core for energy transmission and conver...

Claims

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Application Information

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IPC IPC(8): C04B35/38C04B35/622
Inventor 汪南东谭福清豆小明黄爱萍王家永冯则坤
Owner 江门江益磁材有限公司
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