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Permanent magnetic ferrite material with high radial and axial shrinkage consistency and preparation method thereof
The invention relates to the technical field of permanent magnetic ferrite materials. In view of the problem that the radial and axial shrinkage amplitudes of a strontium ferrite material are inconsistent, the invention discloses a permanent magnetic ferrite material with high radial and axial shrinkage consistency. The structural formula of the permanent magnetic ferrite material is Sr<1-x-beta>LaCaFe<3+><2n-y>CoO<19>, n is 5.2-5.6, beta is greater than or equal to 0.24 and less than or equal to 0.5, x is greater than or equal to 0.1 and less than or equal to 0.36, and y is greater than or equal to 0.1 and less than or equal to 0.4; or the structural formula is Sr<1-x>LaFe<3+><2n-y>CoO<19>, n is 5.8-6.2, x is greater than or equal to 0.1 and less than or equal to 0.4, and y is greater than or equal to 0.05 and less than or equal to 0.3. SiO2 accounting for 0.2-0.4 wt% of the permanent magnetic ferrite material and SrCO3 accounting for 0.4-1.2 wt% of the permanent magnetic ferrite material are added in the secondary process formula. The ratio of radial shrinkage to axial shrinkage of the obtained permanent magnetic ferrite material is close to 1, so that the magnetic performance of the permanent magnetic ferrite material is improved.
本发明涉及永磁铁氧体材料技术领域，针对锶铁氧体材料因径向和轴向收缩幅度不一致的问题，公开一种径向和轴向收缩一致性高的永磁铁氧体材料，该永磁铁氧体材料结构式为：Sr1‑x‑βLaβCaxFe3+2n‑yCoyO19，n为5.2~5.6、0.24≤β≤0.5、0.1≤x≤0.36、0.1≤y≤0.4；或为Sr1‑xLaxFe3+2n‑y Coy O19，n为5.8~6.2、0.1≤x≤0.4、0.05≤y≤0.3，二次工艺配方添加永磁铁氧体材料0.2~0.4wt%的SiO2和0.4~1.2wt%的SrCO3。所得永磁铁氧体材料径向收缩和轴向收缩比接近1，使得永磁铁氧体材料的磁性能得到提升。
Permanent magnetic ferrite material with high radial and axial shrinkage consistency and preparation method thereof
The invention relates to the technical field of permanent magnetic ferrite materials. In view of the problem that the radial and axial shrinkage amplitudes of a strontium ferrite material are inconsistent, the invention discloses a permanent magnetic ferrite material with high radial and axial shrinkage consistency. The structural formula of the permanent magnetic ferrite material is Sr<1-x-beta>LaCaFe<3+><2n-y>CoO<19>, n is 5.2-5.6, beta is greater than or equal to 0.24 and less than or equal to 0.5, x is greater than or equal to 0.1 and less than or equal to 0.36, and y is greater than or equal to 0.1 and less than or equal to 0.4; or the structural formula is Sr<1-x>LaFe<3+><2n-y>CoO<19>, n is 5.8-6.2, x is greater than or equal to 0.1 and less than or equal to 0.4, and y is greater than or equal to 0.05 and less than or equal to 0.3. SiO2 accounting for 0.2-0.4 wt% of the permanent magnetic ferrite material and SrCO3 accounting for 0.4-1.2 wt% of the permanent magnetic ferrite material are added in the secondary process formula. The ratio of radial shrinkage to axial shrinkage of the obtained permanent magnetic ferrite material is close to 1, so that the magnetic performance of the permanent magnetic ferrite material is improved.
本发明涉及永磁铁氧体材料技术领域，针对锶铁氧体材料因径向和轴向收缩幅度不一致的问题，公开一种径向和轴向收缩一致性高的永磁铁氧体材料，该永磁铁氧体材料结构式为：Sr1‑x‑βLaβCaxFe3+2n‑yCoyO19，n为5.2~5.6、0.24≤β≤0.5、0.1≤x≤0.36、0.1≤y≤0.4；或为Sr1‑xLaxFe3+2n‑y Coy O19，n为5.8~6.2、0.1≤x≤0.4、0.05≤y≤0.3，二次工艺配方添加永磁铁氧体材料0.2~0.4wt%的SiO2和0.4~1.2wt%的SrCO3。所得永磁铁氧体材料径向收缩和轴向收缩比接近1，使得永磁铁氧体材料的磁性能得到提升。
Permanent magnetic ferrite material with high radial and axial shrinkage consistency and preparation method thereof
一种径向与轴向收缩一致性高的永磁铁氧体材料及其制备方法
DING BOMING (author) / HU LIANGQUAN (author) / YE HUA (author)
2020-11-27
Patent
Electronic Resource
Chinese
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