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Permanent magnetic ferrite and preparation method thereof
The invention discloses a permanent magnetic ferrite and a preparation method thereof, and relates to the technical field of permanent ferrite materials. The ferrite material has a Sr1-x-betaLabetaCaxFe3+2n-y-alphaCoyMnalphaO19 ferrite main phase, wherein n is more than or equal to 4.9 and less than or equal to 5.9, beta is more than or equal to 0.3 and less than or equal to 0.5, alpha is more than or equal to 0.01 and less than or equal to 0.05, x is more than or equal to 0.1 and less than or equal to 0.35, and y is more than or equal to 0.1 and less than or equal to 0.3. A solid-phase reaction auxiliary agent is added during preparation of ferrite main-phase pre-sintered material powder, so the pre-sintering temperature is reduced, the energy consumption is low, and the morphology and grain size of ferrite microcrystals during subsequent sintering are easy to control; and the permanent magnetic ferrite material with high magnetic performance is prepared by adopting a low-iron formulawith a low molar ratio and adding a small amount of manganese oxide to replace cobalt oxide, and has the characteristics of high residual magnetism, high coercive force and high magnetic energy product.
本发明公开了一种永磁铁氧体及其制备方法，涉及永磁铁氧体材料技术领域，铁氧体材料具有SrLaCaFeCoMnO铁氧体主相，其中4.9≤n≤5.9，0.3≤β≤0.5，0.01≤α≤0.05，0.1≤x≤0.35，0.1≤y≤0.3；本发明在铁氧体主相预烧料粉体制备时添加固相反应助剂，降低预烧温度，能耗小，对后续烧结时铁氧体微观晶体形貌、晶粒大小的控制容易；并且采用低摩尔比的低铁配方以及通过添加少量的氧化锰代替氧化钴来制造获得高磁性能的永磁铁氧体材料，具有高剩磁、高矫顽力、高磁能积的特点。
Permanent magnetic ferrite and preparation method thereof
The invention discloses a permanent magnetic ferrite and a preparation method thereof, and relates to the technical field of permanent ferrite materials. The ferrite material has a Sr1-x-betaLabetaCaxFe3+2n-y-alphaCoyMnalphaO19 ferrite main phase, wherein n is more than or equal to 4.9 and less than or equal to 5.9, beta is more than or equal to 0.3 and less than or equal to 0.5, alpha is more than or equal to 0.01 and less than or equal to 0.05, x is more than or equal to 0.1 and less than or equal to 0.35, and y is more than or equal to 0.1 and less than or equal to 0.3. A solid-phase reaction auxiliary agent is added during preparation of ferrite main-phase pre-sintered material powder, so the pre-sintering temperature is reduced, the energy consumption is low, and the morphology and grain size of ferrite microcrystals during subsequent sintering are easy to control; and the permanent magnetic ferrite material with high magnetic performance is prepared by adopting a low-iron formulawith a low molar ratio and adding a small amount of manganese oxide to replace cobalt oxide, and has the characteristics of high residual magnetism, high coercive force and high magnetic energy product.
本发明公开了一种永磁铁氧体及其制备方法，涉及永磁铁氧体材料技术领域，铁氧体材料具有SrLaCaFeCoMnO铁氧体主相，其中4.9≤n≤5.9，0.3≤β≤0.5，0.01≤α≤0.05，0.1≤x≤0.35，0.1≤y≤0.3；本发明在铁氧体主相预烧料粉体制备时添加固相反应助剂，降低预烧温度，能耗小，对后续烧结时铁氧体微观晶体形貌、晶粒大小的控制容易；并且采用低摩尔比的低铁配方以及通过添加少量的氧化锰代替氧化钴来制造获得高磁性能的永磁铁氧体材料，具有高剩磁、高矫顽力、高磁能积的特点。
Permanent magnetic ferrite and preparation method thereof
一种永磁铁氧体及其制备方法
DING BOMING (Autor:in) / HU LIANGQUAN (Autor:in) / YE HUA (Autor:in)
03.07.2020
Patent
Elektronische Ressource
Chinesisch
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