一种高丰度稀土烧结Nd-Ce-Gd-Pr-Fe-B磁体及其制备方法
By using a multi-rare earth synergistic ratio and trace element regulation in Nd-Ce-Gd-Pr-Fe-B magnets, combined with specific processes, the performance defects of high Ce replacement of sintered NdFeB magnets have been solved, achieving a synergistic improvement in low cost, high magnetic performance and corrosion resistance, making it suitable for large-scale industrial production.
CN122201974BActive Publication Date: 2026-07-17南宁桂电电子科技研究院有限公司 +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 南宁桂电电子科技研究院有限公司
- Filing Date
- 2026-05-15
- Publication Date
- 2026-07-17
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Figure CN122201974B_ABST
Abstract
本发明公开了一种高丰度稀土烧结Nd‑Ce‑Gd‑Pr‑Fe‑B磁体及其制备方法，属于稀土永磁材料技术领域。该磁体按重量百分比计，包括稀土元素RE 30.0‑33.0wt%、B元素0.90‑1.00wt%、微量元素M 0.80‑1.30wt%，余量为Fe及不可避免的杂质；所述RE包括Nd 0.5‑1.0wt%，Ce 15.0‑20.0wt%，Gd 0.5‑2.5wt%，Pr 10.0‑15.0wt%；所述M包括Cu、Al、Zr、Ti。本发明通过多稀土协同配比与微量元素精准调控，从源头上抑制CeFe2杂相生成，优化晶界结构，缓解磁稀释效应，在大幅降低原料成本的同时，实现磁体磁性能与耐蚀性能的协同提升；制备方法采用常规工业化设备，工艺参数窗口宽，生产稳定可控，适合大规模连续生产，制备的磁体可广泛应用于新能源汽车、节能家电、工业电机等领域。
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