制备工艺对(La, Ce)-Fe-B永磁材料CeFe2相含量与磁性能的影响

doi:10.13251/j.issn.0254-6051.2024.04.002

金属热处理 ›› 2024, Vol. 49 ›› Issue (4): 8-12.DOI: 10.13251/j.issn.0254-6051.2024.04.002

制备工艺对(La, Ce)-Fe-B永磁材料CeFe₂相含量与磁性能的影响

董福海, 章明, 李永峰

内蒙古科技大学理学院, 内蒙古包头 014010

收稿日期:2023-10-30 修回日期:2024-03-04 出版日期:2024-04-25 发布日期:2024-05-27
通讯作者: 章明,讲师,E-mail: 18032080015@189.cn
作者简介:董福海(1998—),男,硕士研究生,主要研究方向为稀土磁性材料,E-mail: 1836773503@qq.com。
基金资助:
国家自然科学基金(51961031);内蒙古自然科学基金(2019MS05040)

Effect of preparation process on CeFe₂ phase content and magnetic properties of (La, Ce)-Fe-B permanent magnetic materials

Dong Fuhai, Zhang Ming, Li Yongfeng

School of Science, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China

Received:2023-10-30 Revised:2024-03-04 Online:2024-04-25 Published:2024-05-27

摘要/Abstract

摘要： 分别使用退火和快淬工艺制备了名义成分为(La_xCe_1-x)_3.0Fe₁₄B(x=0, 0.05, 0.10, 0.15, 0.20, 0.25, 0.30, 0.35)合金近平衡态和非平衡态试样。采用X射线衍射及热磁曲线分析了La含量对合金中CeFe₂相的含量和磁性能的影响。结果表明,合金中CeFe₂相的含量随La替代量的增加而单调降低,且非平衡态试样中含有比同等名义成分近平衡态试样更少的CeFe₂相,说明制备工艺对CeFe₂相的含量影响较大。随La含量的增加,非平衡态试样的饱和磁化强度、剩磁、最大磁能积都有所提高,矫顽力先升高后降低,这是磁晶各向异性场降低与微结构优化的共同作用结果。另外,La不能像其他稀土金属一样进入CeFe₂相。

关键词: 高丰度稀土, 永磁材料, Ce-Fe-B合金, 物相组成, 快淬薄带, CeFe₂

Abstract: Near-equilibrium and non-equilibrium specimens with the nominal composition of (La_xCe_1-x)_3.0Fe₁₄B(x=0, 0.05, 0.10, 0.15, 0.20, 0.25, 0.30, 0.35) alloy were prepared by annealing and rapid quenching, respectively. The effect of La content on the content of CeFe₂ phase and magnetic properties of the alloy was studied by means of X-ray diffraction and thermomagnetic curve analysis. The results show that the content of CeFe₂ phase in the alloy decreases monotonously with the increase of La substitution, and the non-equilibrium specimen contains less CeFe₂ phase than the near-equilibrium specimen with the same nominal composition, indicating the preparation process has a strong influence on the content of the CeFe₂ phase. With the increase of La content, the saturation magnetization, remanence and maximum magnetic energy product of the non-equilibrium specimen are improved, the coercivity increases and then decreases, which all is the result of the decrease of magnetocrystalline anisotropy field and the optimization of microstructure. In addition, it is found that La con not enter CeFe₂ phase like other rare earth metals.

Key words: high abundance rare earth, permanent magnet material, Ce-Fe-B alloy, phase composition, melt-spun ribbons, CeFe₂

中图分类号:

TM273

董福海, 章明, 李永峰. 制备工艺对(La, Ce)-Fe-B永磁材料CeFe₂相含量与磁性能的影响[J]. 金属热处理, 2024, 49(4): 8-12.

Dong Fuhai, Zhang Ming, Li Yongfeng. Effect of preparation process on CeFe₂ phase content and magnetic properties of (La, Ce)-Fe-B permanent magnetic materials[J]. Heat Treatment of Metals, 2024, 49(4): 8-12.

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制备工艺对(La, Ce)-Fe-B永磁材料CeFe₂相含量与磁性能的影响

Effect of preparation process on CeFe₂ phase content and magnetic properties of (La, Ce)-Fe-B permanent magnetic materials

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