High-frequency manganese zinc ferrite material and preparation method thereof: Fid-Bau Portal

High-frequency manganese zinc ferrite material and preparation method thereof

LI XIAOLONG / LI QINGJIE / WU QIANG / GAO HONGLIANG / HUANG BIN / XIE ZHONGLI

The invention discloses a high-frequency manganese zinc ferrite material and a preparation method thereof, and belongs to the technical field of manganese zinc ferrite materials, the material comprises a main component and an auxiliary component, the main component comprises 53.85-54.9 mol% of Fe2O3, 4.5-5.5 mol% of ZnO, and the balance MnO; the auxiliary components are prepared from the following raw materials in percentage by weight: 0.20 to 0.30 percent of Co2O3, 0.004 to 0.012 percent of SiO2, 0.05 to 0.15 percent of CaCO3, 0.01 to 0.06 percent of Nb2O5, 0.01 to 0.04 percent of ZrO2 and 0.01 to 0.05 percent of V2O5 according to the weight of the main components. By controlling the composition of the main components and the auxiliary components, optimizing the preparation process and performing magnetic field heat treatment on the sintered magnetic core, the manganese-zinc ferrite material meets the requirement of low loss of the high-frequency transformer of the switching power supply at high frequency.

本发明公开了一种高频锰锌铁氧体材料及其制备方法，属于锰锌铁氧体材料技术领域，该材料包括主成分和副成分，所述主成分由Fe2O3：53.85～54.9mol％，ZnO：4.5～5.5mol％，MnO余量组成；所述副成分按照按主成分重量计：Co2O3：0.20～0.30wt％，SiO2：0.004～0.012wt％，CaCO3：0.05～0.15wt％，Nb2O5：0.01～0.06wt％，ZrO2：0.01～0.04wt％，V2O5：0.01～0.05wt％。通过控制主成分、副成分的组成及制备工艺优化，以及烧结后的磁芯加磁场热处理后，使锰锌铁氧体材料适应开关电源高频变压器在高频下低损耗的要求。

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