A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
MnZn ferrite resistant to direct current superposition, wide in temperature range and low in loss as well as preparation method and application of MnZn ferrite
The invention relates to a direct-current-superposition-resistant wide-temperature-range low-loss MnZn ferrite and a preparation method and application thereof, and the preparation method comprises the following steps: calculating the required raw material weight according to 52.3-53.3 mol% of Fe2O3, 35.2-36.2 mol% of MnO, 0.12-0.18 mol% of TiO2 and the balance of ZnO to obtain a MnZn ferrite main material; the preparation method comprises the following steps of: mixing 0.12 to 0.16 weight percent of CaCO3, 0.02 to 0.04 weight percent of SiO2, 0.03 to 0.04 weight percent of V2O5, 0.12 to 0.18 weight percent of Co2O3 and 0.1 to 0.3 weight percent of SrTiO3 nano powder to obtain an additive; the main materials are put into a ball mill to be subjected to primary ball-milling mixing, and then presintering is performed after drying; and putting the pre-sintered powder and an additive into a ball mill at the same time for secondary ball milling, then drying and granulating to form an annular green body, and sintering the annular green body to obtain the ferrite. The MnZn ferrite material with high direct current superposition resistance and low loss can be prepared, the magnetizing permeability is 2933, Hmu 70, that is, the direct current superposition magnetic field value corresponding to the magnetic permeability reduced by 70% is 200A/m, and the loss is lower than 330kW/m < 3 > in the range of 25-100 DEG C under 100kHz 200mT.
耐直流叠加且宽温低损耗MnZn铁氧体及制备方法和应用，包括：按照52.3～53.3mol％的Fe2O3，35.2～36.2mol％的MnO，0.12～0.18mol％的TiO2，余量为ZnO计算所需的原料重量，得到MnZn铁氧体主材料；按照0.12～0.16wt％的CaCO3、0.02～0.04wt％的SiO2、0.03～0.04wt％的V2O5、0.12～0.18wt％的Co2O3、0.1～0.3wt％的SrTiO3纳米粉混合得到添加剂；将主材料放入球磨机中进行一次球磨混合，然后烘干后进行预烧；将预烧粉料与添加剂同时放入球磨机中进行二次球磨，然后烘干后进行造粒，成型为环形生胚，烧结环形生坯得到铁氧体。能够制备出兼具高耐直流叠加能力且低损耗的MnZn铁氧体材料，起磁磁导率为2933，Hμ70，即磁导率降低70％所对应的直流叠加磁场值为200A/m，在100kHz 200mT下，25～100℃范围内的损耗低于330kW/m3。
MnZn ferrite resistant to direct current superposition, wide in temperature range and low in loss as well as preparation method and application of MnZn ferrite
The invention relates to a direct-current-superposition-resistant wide-temperature-range low-loss MnZn ferrite and a preparation method and application thereof, and the preparation method comprises the following steps: calculating the required raw material weight according to 52.3-53.3 mol% of Fe2O3, 35.2-36.2 mol% of MnO, 0.12-0.18 mol% of TiO2 and the balance of ZnO to obtain a MnZn ferrite main material; the preparation method comprises the following steps of: mixing 0.12 to 0.16 weight percent of CaCO3, 0.02 to 0.04 weight percent of SiO2, 0.03 to 0.04 weight percent of V2O5, 0.12 to 0.18 weight percent of Co2O3 and 0.1 to 0.3 weight percent of SrTiO3 nano powder to obtain an additive; the main materials are put into a ball mill to be subjected to primary ball-milling mixing, and then presintering is performed after drying; and putting the pre-sintered powder and an additive into a ball mill at the same time for secondary ball milling, then drying and granulating to form an annular green body, and sintering the annular green body to obtain the ferrite. The MnZn ferrite material with high direct current superposition resistance and low loss can be prepared, the magnetizing permeability is 2933, Hmu 70, that is, the direct current superposition magnetic field value corresponding to the magnetic permeability reduced by 70% is 200A/m, and the loss is lower than 330kW/m < 3 > in the range of 25-100 DEG C under 100kHz 200mT.
耐直流叠加且宽温低损耗MnZn铁氧体及制备方法和应用，包括：按照52.3～53.3mol％的Fe2O3，35.2～36.2mol％的MnO，0.12～0.18mol％的TiO2，余量为ZnO计算所需的原料重量，得到MnZn铁氧体主材料；按照0.12～0.16wt％的CaCO3、0.02～0.04wt％的SiO2、0.03～0.04wt％的V2O5、0.12～0.18wt％的Co2O3、0.1～0.3wt％的SrTiO3纳米粉混合得到添加剂；将主材料放入球磨机中进行一次球磨混合，然后烘干后进行预烧；将预烧粉料与添加剂同时放入球磨机中进行二次球磨，然后烘干后进行造粒，成型为环形生胚，烧结环形生坯得到铁氧体。能够制备出兼具高耐直流叠加能力且低损耗的MnZn铁氧体材料，起磁磁导率为2933，Hμ70，即磁导率降低70％所对应的直流叠加磁场值为200A/m，在100kHz 200mT下，25～100℃范围内的损耗低于330kW/m3。
MnZn ferrite resistant to direct current superposition, wide in temperature range and low in loss as well as preparation method and application of MnZn ferrite
耐直流叠加且宽温低损耗MnZn铁氧体及制备方法和应用
GUO RONGDI (author) / WU GUOHUA (author) / HU ZHONGQIANG (author) / LIU MING (author)
2024-07-02
Patent
Electronic Resource
Chinese
| European Patent Office | 2015
| European Patent Office | 2024
MNZN FERRITE SINTERED BODY AND METHOD FOR MANUFACTURING MNZN FERRITE
| European Patent Office | 2023
METHOD FOR PRODUCING MNZN-BASED FERRITE, AND MNZN-BASED FERRITE
| European Patent Office | 2016
METHOD FOR PRODUCING MnZn-BASED FERRITE, AND MnZn-BASED FERRITE
| European Patent Office | 2019