A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of high-impedance soft magnetic ferrite core
The invention relates to the technical field of soft magnetic ferrites, and discloses a preparation method of a high-impedance soft magnetic ferrite core, which comprises the following steps: S1, material preparation: weighing the following raw materials in mole fraction for preparation: selecting 45.4 to 47.8 mol% of Fe2O3, 25.6 to 32.8 mol% of Mn3o4, 20.4 to 25.6 mol% of ZnO, 2.2 to 3.8 mol% of HfO2, 0.34 to 0.78 mol% of TiO2, 1.1 to 1.3 mol% of dispersing agent and 0.12 to 0.16 mol% of defoaming agent; according to the preparation method of the high-impedance soft magnetic ferrite magnetic core, Fe2O3, Mn3o4, ZnO, HfO2, TiO2, the dispersing agent and the defoaming agent are selected to prepare the magnetic ferrite magnetic core, so that the resistance of the magnetic ferrite magnetic core is greatly improved, and the high-impedance soft magnetic ferrite magnetic core is prepared by improving the direct current superposition characteristic of the material and reducing the optimal process conditions of the hysteresis constant of the material. According to the method, the Curie temperature, the resistivity, the initial permeability, the frequency dispersion characteristic and the impedance characteristic of the MnZn ferrite magnetic core and related preparation technologies, an experience calculation formula of the Curie temperature of the MnZn ferrite is obtained, the broadband high-impedance MnZn ferrite magnetic core with the resistivity reaching up to 100 omegaM or above is obtained, and the method has a good application prospect.
本发明涉及软磁铁氧体技术领域，且公开了一种高阻抗软磁铁氧体磁芯制备方法，包括以下步骤：S1、备料：按照摩尔份计称取以下原料进行备料，选取45.4～47.8mol％Fe2O3、25.6～32.8mol％Mn3o4、20.4～25.6mol％ZnO、2.2～3.8mol％HfO2、0.34～0.78mol％TiO2、1.1～1.3mol％分散剂和0.12～0.16mol％消泡剂。该高阻抗软磁铁氧体磁芯制备方法，选取Fe2O3、Mn3o4、ZnO、HfO2、TiO2、分散剂和消泡剂所制备出的磁铁氧体磁芯，使得磁铁氧体磁芯的抗阻性得到较大改善，通过改善材料直流叠加特性、减小材料磁滞常数的最佳优化工艺条件，以及MnZn铁氧体磁芯的居里温度、电阻率、起始磁导率及其频散特性、阻抗特性和相关制备技术，得出MnZn铁氧体居里温度的经验计算公式，得到电阻率高达100ΩM以上的宽频高阻抗MnZn铁氧体磁芯，有很好的应用前景。
Preparation method of high-impedance soft magnetic ferrite core
The invention relates to the technical field of soft magnetic ferrites, and discloses a preparation method of a high-impedance soft magnetic ferrite core, which comprises the following steps: S1, material preparation: weighing the following raw materials in mole fraction for preparation: selecting 45.4 to 47.8 mol% of Fe2O3, 25.6 to 32.8 mol% of Mn3o4, 20.4 to 25.6 mol% of ZnO, 2.2 to 3.8 mol% of HfO2, 0.34 to 0.78 mol% of TiO2, 1.1 to 1.3 mol% of dispersing agent and 0.12 to 0.16 mol% of defoaming agent; according to the preparation method of the high-impedance soft magnetic ferrite magnetic core, Fe2O3, Mn3o4, ZnO, HfO2, TiO2, the dispersing agent and the defoaming agent are selected to prepare the magnetic ferrite magnetic core, so that the resistance of the magnetic ferrite magnetic core is greatly improved, and the high-impedance soft magnetic ferrite magnetic core is prepared by improving the direct current superposition characteristic of the material and reducing the optimal process conditions of the hysteresis constant of the material. According to the method, the Curie temperature, the resistivity, the initial permeability, the frequency dispersion characteristic and the impedance characteristic of the MnZn ferrite magnetic core and related preparation technologies, an experience calculation formula of the Curie temperature of the MnZn ferrite is obtained, the broadband high-impedance MnZn ferrite magnetic core with the resistivity reaching up to 100 omegaM or above is obtained, and the method has a good application prospect.
本发明涉及软磁铁氧体技术领域，且公开了一种高阻抗软磁铁氧体磁芯制备方法，包括以下步骤：S1、备料：按照摩尔份计称取以下原料进行备料，选取45.4～47.8mol％Fe2O3、25.6～32.8mol％Mn3o4、20.4～25.6mol％ZnO、2.2～3.8mol％HfO2、0.34～0.78mol％TiO2、1.1～1.3mol％分散剂和0.12～0.16mol％消泡剂。该高阻抗软磁铁氧体磁芯制备方法，选取Fe2O3、Mn3o4、ZnO、HfO2、TiO2、分散剂和消泡剂所制备出的磁铁氧体磁芯，使得磁铁氧体磁芯的抗阻性得到较大改善，通过改善材料直流叠加特性、减小材料磁滞常数的最佳优化工艺条件，以及MnZn铁氧体磁芯的居里温度、电阻率、起始磁导率及其频散特性、阻抗特性和相关制备技术，得出MnZn铁氧体居里温度的经验计算公式，得到电阻率高达100ΩM以上的宽频高阻抗MnZn铁氧体磁芯，有很好的应用前景。
Preparation method of high-impedance soft magnetic ferrite core
一种高阻抗软磁铁氧体磁芯制备方法
CHEN CHANGQING (author) / FANG HUA (author) / GU SHUTING (author) / FAN FENG (author) / HU ZONGBIN (author)
2023-03-14
Patent
Electronic Resource
Chinese
Preparation method of high-impedance soft magnetic ferrite core material
| European Patent Office | 2016
High-impedance low-power-consumption soft magnetic ferrite material and preparation method thereof
| European Patent Office | 2015
Preparation method of soft magnetic ferrite core material with high permeability
| European Patent Office | 2016
| European Patent Office | 2024