High-frequency large-magnetic-field soft magnetic ferrite material and preparation method thereof

The invention belongs to the technical field of soft magnetic ferrite materials, and discloses a preparation method of a high-frequency large-magnetic-field soft magnetic ferrite material. The method comprises the following steps: (1) accurately weighing raw materials including ferric oxide (Fe2O3),...

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Bibliographische Detailangaben
Hauptverfasser: SU RONGJIA, GUO HAO, LIN ZHENGCHONG, YAO MUYOU, TAN FUQING
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention belongs to the technical field of soft magnetic ferrite materials, and discloses a preparation method of a high-frequency large-magnetic-field soft magnetic ferrite material. The method comprises the following steps: (1) accurately weighing raw materials including ferric oxide (Fe2O3), manganous-manganic oxide (Mn3O4) and zinc oxide (ZnO) in proportion to prepare a powder with uniformly distributed particles; (2) sintering the powder in air to obtain a manganese zinc ferrite pre-sintered powder; (3) mixing the pre-sintered powder with auxiliary components which are weighed in proportion; (4) adding a lubricant into the mixed granules, and pressing the granules into green bodies; and (5) putting the green bodies into a controllable nitrogen atmosphere furnace, and sintering by adopting a specific sintering curve. The high-frequency large-magnetic-field soft magnetic ferrite material prepared by the preparation method disclosed by the invention not only has the characteristic of a low loss in a br