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Wide-temperature, high-frequency and low-loss manganese-zinc soft magnetic ferrite material and preparation method thereof

A manganese-zinc soft magnet and low-loss technology, which is applied in the manufacture of inductors/transformers/magnets, the magnetism of inorganic materials, and electrical components, can solve the problems of slow expansion of wide-temperature characteristics, achieve excellent working performance, small standby loss, and guarantee consistent effect

Inactive Publication Date: 2018-01-05
郴州市久隆旺高科电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing technologies show that the expansion of wide temperature characteristics to low temperature is relatively slow, especially under the conditions of 500KHz and 50mT. Therefore, it is urgent to develop a wide temperature, high frequency, low loss manganese zinc soft ferrite material that can achieve negative temperatures

Method used

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  • Wide-temperature, high-frequency and low-loss manganese-zinc soft magnetic ferrite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]A manganese-zinc soft magnetic ferrite material with wide temperature and high frequency and low loss, including main component, auxiliary component A and auxiliary component B, calculated by weight percentage, the main component includes 69.10-71.90% Fe 2 o 3 , 22.20-23.15% of MnO and 4.95-8.70% of ZnO;

[0033] Based on the weight of the main component, the auxiliary component A is CaCO 3 0.01~0.05%, V 2 o 5 0.01~0.04%, TiO 2 0.01~0.05%, Co 3 o 4 At least two of 0.05-0.20%;

[0034] Based on the weight of the main component, the auxiliary component B is CaCO 3 0.01~0.05%, Nb 2 o 5 0.01~0.04%, TiO 2 0.05~0.15%, Co 3 o 4 0.10~0.25%, CuO 0.01~0.05%, MoO 0.01~0.07%, SiO 2 At least three of 0-0.05%;

[0035] Contains SiO in auxiliary component B 2 The amount is based on the impurity SiO contained in the main component 2 The total amount is determined to ensure that the SiO in the entire material 2 Accounting for the total weight percentage of main ...

Embodiment 2

[0045] Under other conditions identical to Example 1, the main raw material Fe used in step (1) 2 o 3 , MnO, ZnO component analysis and detection of SiO 2 The contents are 0.0063%, 0.0096%, 0.0114%, respectively, SiO 2 The percentage of the total content of the total content of the measured main components to the total weight is 0.0273%, and this value is in the range of 0.025 to 0.035%. Therefore, in step (5), no SiO 2 .

Embodiment 3

[0047] In the same situation as in Example 1, the auxiliary component A added in step (3) is: CaCO 3 0.01%, V 2 o 5 0.01%, Co 3 o 4 0.15%; in step (5), the auxiliary component B is added to the secondary ingredients: CaCO 3 0.05%, TiO 2 0.05%, Co 3 o 4 0.05%, MoO 0.01%, SiO 2 0.01%.

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Abstract

A wide-temperature, high-frequency and low-loss manganese-zinc soft magnetic ferrite material comprises a main component, an auxiliary component A and an auxiliary component B, wherein, according to weight percentage, the main component comprises Fe2O3, MnO and ZnO; based on the weight of the main component, the auxiliary component A comprises at least two of CaCO3, V2O5, TiO2 and Co3O4, and the auxiliary component B comprises at least three of CaCO3, Nb2O5, TiO2, Co3O4, CuO, MoO and SiO2; the SiO2 amount in the auxiliary component B is determined according to the total amount of SiO2 impurities in the main component so as to ensure that in the whole material, the SiO2 amount is 0.025-0.035% of the total weight of the main component. A preparation method of the wide-temperature, high-frequency and low-loss manganese-zinc soft magnetic ferrite material sequentially comprises the following steps: performing component analysis on the main component, primarily dosing, primarily sanding, presintering, secondarily dosing, moulding and sintering. The wide-temperature, high-frequency and low-loss manganese-zinc soft magnetic ferrite material has excellent working performance under the conditions of 500KHz and 50mT and within the temperature range from -20 DEG C to 120 DEG C, has relatively low loss, saves more energy than the conventional material, and has lower standby loss at low temperature and room temperature.

Description

technical field [0001] The invention relates to the field of manganese-zinc ferrite magnetic materials, in particular to a manganese-zinc soft magnetic ferrite material with wide temperature and high frequency and low loss and a preparation method thereof. Background technique [0002] With the technological progress of the electronics industry, new technical requirements have been put forward for soft ferrite materials, which are the basic functional materials of the electronics industry. The switching power supply configured inside the electronic and electrical equipment is designed to require that when the electrical equipment is working at full load, the balanced operating temperature corresponding to the switching power supply is about 100°C, so that the power consumption of the magnetic core in the switching power supply can be minimized. Correspondingly, here The operating efficiency of the switching power supply is also the highest at temperature. However, in the ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622C04B35/64H01F1/34H01F41/02
Inventor 袁楚国周新华叶绍均
Owner 郴州市久隆旺高科电子有限公司
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