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Lanthanum-sodium permanent magnetic ferrite and preparation method and application thereof
The invention belongs to the technical field of permanent magnetic ferrites, and particularly relates to a lanthanum-sodium permanent magnetic ferrite and a preparation method and application thereof.The invention provides a lanthanum-sodium permanent magnetic ferrite. The chemical element composition of the lanthanum-sodium permanent magnetic ferrite meets LaCaSr<1-x-y>Fe<2n-z>NaO<19>,and in the formula, x is greater than or equal to 0.2 and less than or equal to 0.5, y is greater than or equal to 0.3 and less than or equal to 0.45, z is greater than or equal to 0.2 and less than or equal to 0.5, n is greater than or equal to 5 and less than or equal to 5.9, and 1-x-y is greater than or equal to 0.05 and less than or equal to 0.25. The lanthanum-sodium permanent magnetic ferrite obtained by the invention has relatively high residual magnetism and coercive force. Experimental results show that the residual magnetism Br of the lanthanum sodium iron oxide permanent magnet reaches 433-452 mT, the magnetic induction coercive force Hcb reaches 310-334 kA/m, the intrinsic coercive force Hcj reaches 381-428 kA/m, the maximum magnetic energy product (BH)max reaches 36.5-39 kJ/m<3>, and the lanthanum sodium iron oxide permanent magnet has excellent magnetic performance.
本发明属于永磁铁氧体技术领域，具体涉及一种镧钠永磁铁氧体及其制备方法和应用。本发明提供了一种镧钠永磁铁氧体，所述镧钠永磁铁氧体的化学元素组成满足LaCaSrFeNaO，式中，0.2≤x≤0.5，0.3≤y≤0.45，0.2≤z≤0.5，5≤n≤5.9，0.05≤1‑x‑y≤0.25。本发明所得到的镧钠永磁铁氧体具有较高的剩磁和矫顽力。实验结果表明，本发明所述镧钠铁氧永磁体剩磁Br达433～452mT，磁感矫顽力Hcb达310～334kA/m，内禀矫顽力Hcj达381～428kA/m，最大磁能积(BH)达36.5～39kJ/m，具有优异的磁性能。
Lanthanum-sodium permanent magnetic ferrite and preparation method and application thereof
The invention belongs to the technical field of permanent magnetic ferrites, and particularly relates to a lanthanum-sodium permanent magnetic ferrite and a preparation method and application thereof.The invention provides a lanthanum-sodium permanent magnetic ferrite. The chemical element composition of the lanthanum-sodium permanent magnetic ferrite meets LaCaSr<1-x-y>Fe<2n-z>NaO<19>,and in the formula, x is greater than or equal to 0.2 and less than or equal to 0.5, y is greater than or equal to 0.3 and less than or equal to 0.45, z is greater than or equal to 0.2 and less than or equal to 0.5, n is greater than or equal to 5 and less than or equal to 5.9, and 1-x-y is greater than or equal to 0.05 and less than or equal to 0.25. The lanthanum-sodium permanent magnetic ferrite obtained by the invention has relatively high residual magnetism and coercive force. Experimental results show that the residual magnetism Br of the lanthanum sodium iron oxide permanent magnet reaches 433-452 mT, the magnetic induction coercive force Hcb reaches 310-334 kA/m, the intrinsic coercive force Hcj reaches 381-428 kA/m, the maximum magnetic energy product (BH)max reaches 36.5-39 kJ/m<3>, and the lanthanum sodium iron oxide permanent magnet has excellent magnetic performance.
本发明属于永磁铁氧体技术领域，具体涉及一种镧钠永磁铁氧体及其制备方法和应用。本发明提供了一种镧钠永磁铁氧体，所述镧钠永磁铁氧体的化学元素组成满足LaCaSrFeNaO，式中，0.2≤x≤0.5，0.3≤y≤0.45，0.2≤z≤0.5，5≤n≤5.9，0.05≤1‑x‑y≤0.25。本发明所得到的镧钠永磁铁氧体具有较高的剩磁和矫顽力。实验结果表明，本发明所述镧钠铁氧永磁体剩磁Br达433～452mT，磁感矫顽力Hcb达310～334kA/m，内禀矫顽力Hcj达381～428kA/m，最大磁能积(BH)达36.5～39kJ/m，具有优异的磁性能。
Lanthanum-sodium permanent magnetic ferrite and preparation method and application thereof
一种镧钠永磁铁氧体及其制备方法和应用
LU YANGCHENG (Autor:in) / ZHAO GUOFA (Autor:in) / ZHU RIHONG (Autor:in) / WU XINXIN (Autor:in) / HUA YANFEI (Autor:in)
04.09.2020
Patent
Elektronische Ressource
Chinesisch
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