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Ferrite permanent magnet material and preparation method thereof
The invention discloses a ferrite permanent magnet material and a preparation method thereof. The chemical formula of the ferrite permanent magnet material is (Sr1-wBaw)(1-x-y)LaxCayFe(2n-z)CozO, wherein x is greater than or equal to 0.5 and less than or equal to 0.68, y is greater than or equal to 0.3 and less than or equal to 0.5, z is greater than or equal to 0.48 and less than or equal to 0.68, n is greater than or equal to 4.9 and less than or equal to 5.4, and w is greater than or equal to 0.001 and less than or equal to 1. The ferrite permanent magnet material contains a rare earth La element and Co, wherein the La/Co ratio is greater than or equal to 1.65; the ferrite permanent magnet material also contains Si, B and Mn and comprises the components by weight based on oxide: 0.2% to0.4% of SiO2, 1% to 2% of B2O3 and 0.1% to 0.3% of MnO. According to the preparation method, fine and uniform crystal grains are obtained through low-temperature sintering, and the properties such asBr and Hcj of the product can be improved.
一种铁氧体永磁材料及其制备方法，所述铁氧体永磁材料的化学式为（SrBa）LaCaFeCoO，其中0.5≤x≤0.68，0.3≤y≤0.5，0.48≤z≤0.68，4.9≤n≤5.4，0.001≤w≤1。该铁氧体永磁材料中含有稀土La元素和Co，La/Co≥1.65；并含有Si、B和Mn，以氧化物重量计，SiO为0.2%～0.4%、BO为1%～2%、MnO为0.1%～0.3%。所述制备方法通过较低温度烧结获得细小均匀的晶粒，可以提高产品的Br和Hcj等性能。
Ferrite permanent magnet material and preparation method thereof
The invention discloses a ferrite permanent magnet material and a preparation method thereof. The chemical formula of the ferrite permanent magnet material is (Sr1-wBaw)(1-x-y)LaxCayFe(2n-z)CozO, wherein x is greater than or equal to 0.5 and less than or equal to 0.68, y is greater than or equal to 0.3 and less than or equal to 0.5, z is greater than or equal to 0.48 and less than or equal to 0.68, n is greater than or equal to 4.9 and less than or equal to 5.4, and w is greater than or equal to 0.001 and less than or equal to 1. The ferrite permanent magnet material contains a rare earth La element and Co, wherein the La/Co ratio is greater than or equal to 1.65; the ferrite permanent magnet material also contains Si, B and Mn and comprises the components by weight based on oxide: 0.2% to0.4% of SiO2, 1% to 2% of B2O3 and 0.1% to 0.3% of MnO. According to the preparation method, fine and uniform crystal grains are obtained through low-temperature sintering, and the properties such asBr and Hcj of the product can be improved.
一种铁氧体永磁材料及其制备方法，所述铁氧体永磁材料的化学式为（SrBa）LaCaFeCoO，其中0.5≤x≤0.68，0.3≤y≤0.5，0.48≤z≤0.68，4.9≤n≤5.4，0.001≤w≤1。该铁氧体永磁材料中含有稀土La元素和Co，La/Co≥1.65；并含有Si、B和Mn，以氧化物重量计，SiO为0.2%～0.4%、BO为1%～2%、MnO为0.1%～0.3%。所述制备方法通过较低温度烧结获得细小均匀的晶粒，可以提高产品的Br和Hcj等性能。
Ferrite permanent magnet material and preparation method thereof
一种铁氧体永磁材料及其制备方法
TAN CHUNLIN (author) / HU SHENGQING (author) / CHEN KEN (author) / ZHENG LIANG (author) / DENG XINGMIN (author) / ZHOU JINGPAO (author) / HUANG KAIMIN (author) / ZHANG TIEJUN (author)
2020-04-24
Patent
Electronic Resource
Chinese
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