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High-permeability manganese-zinc ferrite material for differential-mode and common-mode inductors and preparation method of high-permeability manganese-zinc ferrite material
The invention discloses a high-magnetic-conductivity manganese-zinc ferrite material for differential-mode and common-mode inductors and a preparation method of the high-magnetic-conductivity manganese-zinc ferrite material. The main components of the material are Fe2O3, ZnO and MnO, and the auxiliary components of the material are NiO and three or more than three of CaCO3, Co2O3, Bi2O3, SiO2 and CuO. The main process comprises the steps of mixing ingredients, pre-sintering, crushing, granulating, forming and sintering, in the sintering process, pure oxygen sintering is carried out in a heat preservation section, the oxygen content is controlled under balanced oxygen partial pressure in a cooling section, and finally the effects of improving the magnetic conductivity and the saturation magnetic flux density are achieved: the initial magnetic conductivity mu i is greater than 7000 (25 DEG C); the saturation magnetic flux density Bs is larger than or equal to 420 mT (100 DEG C, 1200 A/m); under the superposition conditions of 100 DEG C, 300 kHz and 30 A/m, the magnetic retention rate mu 30/mu 0 is larger than or equal to 80%. (mu30 is the magnetic conductivity under 30A/m superposition, and mu0 is the magnetic conductivity under the condition that superposition is not added).
本发明公开了一种差共模电感用高磁导率锰锌铁氧体材料及其制备方法，该材料主成分为Fe2O3，ZnO，MnO，辅助成分为NiO，及CaCO3、Co2O3、Bi2O3、SiO2、CuO中的三种或三种以上。主要工艺为配料混合、预烧、粉碎、造粒、成型和烧结，在烧结过程中，保温段纯氧烧结，降温段采用平衡氧分压下控制氧含量，最终达到提高磁导率及饱和磁通密度的效果：初始磁导率μi＞7000（25℃）；饱和磁通密度Bs≥420mT（100℃，1200A/m）；在100℃，300kHz，30A/m叠加条件下，保磁率μ30/μ0≥80％。（μ30为30A/m叠加下磁导率，μ0为未加叠加下磁导率）。
High-permeability manganese-zinc ferrite material for differential-mode and common-mode inductors and preparation method of high-permeability manganese-zinc ferrite material
The invention discloses a high-magnetic-conductivity manganese-zinc ferrite material for differential-mode and common-mode inductors and a preparation method of the high-magnetic-conductivity manganese-zinc ferrite material. The main components of the material are Fe2O3, ZnO and MnO, and the auxiliary components of the material are NiO and three or more than three of CaCO3, Co2O3, Bi2O3, SiO2 and CuO. The main process comprises the steps of mixing ingredients, pre-sintering, crushing, granulating, forming and sintering, in the sintering process, pure oxygen sintering is carried out in a heat preservation section, the oxygen content is controlled under balanced oxygen partial pressure in a cooling section, and finally the effects of improving the magnetic conductivity and the saturation magnetic flux density are achieved: the initial magnetic conductivity mu i is greater than 7000 (25 DEG C); the saturation magnetic flux density Bs is larger than or equal to 420 mT (100 DEG C, 1200 A/m); under the superposition conditions of 100 DEG C, 300 kHz and 30 A/m, the magnetic retention rate mu 30/mu 0 is larger than or equal to 80%. (mu30 is the magnetic conductivity under 30A/m superposition, and mu0 is the magnetic conductivity under the condition that superposition is not added).
本发明公开了一种差共模电感用高磁导率锰锌铁氧体材料及其制备方法，该材料主成分为Fe2O3，ZnO，MnO，辅助成分为NiO，及CaCO3、Co2O3、Bi2O3、SiO2、CuO中的三种或三种以上。主要工艺为配料混合、预烧、粉碎、造粒、成型和烧结，在烧结过程中，保温段纯氧烧结，降温段采用平衡氧分压下控制氧含量，最终达到提高磁导率及饱和磁通密度的效果：初始磁导率μi＞7000（25℃）；饱和磁通密度Bs≥420mT（100℃，1200A/m）；在100℃，300kHz，30A/m叠加条件下，保磁率μ30/μ0≥80％。（μ30为30A/m叠加下磁导率，μ0为未加叠加下磁导率）。
High-permeability manganese-zinc ferrite material for differential-mode and common-mode inductors and preparation method of high-permeability manganese-zinc ferrite material
一种差共模电感用高磁导率锰锌铁氧体材料及其制备方法
WANG XIN (author) / DUAN JINZHU (author) / NIE JIANWEN (author) / GONG YOUHUI (author) / MA ZHANHUA (author) / XING BINGBING (author) / WEI LINGXIAO (author)
2022-05-06
Patent
Electronic Resource
Chinese
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