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发明授权
CN108133799B 一种高性能纳米晶热变形钕铁硼永磁体及其制备方法 有权

一种高性能纳米晶热变形钕铁硼永磁体及其制备方法
摘要：
一种纳米晶热变形钕铁硼永磁体及其制备方法，该永磁体制备原料包括主合金粉末和高熵合金辅合金粉末，所述主合金粉末按原子百分比计组成为RexFe100‑x‑y‑zMyBz，其中Re为La、Ce、Pr、Nd、Dy、Tb、Gd、Ho、Er、Y等中的一种或几种，M为Co、Ga、Cu、Al中的一种或几种，12≤x≤15，0.1≤y≤6，5≤z≤8；所述高熵合金辅合金粉末主要元素为FeCoNiM1M2，其中M1和M2为Cu、Al、Cr、Mn、Ga、Zn、Sn、Mg、Si、B中的一种或几种，且M1和M2不相同，每种元素含量按高熵合金的设计原则进行配分。本发明通过掺杂高塑中强、软磁性良好的高熵合金粉末得到的纳米晶热变形钕铁硼永磁体综合磁性能优异。
摘要（英）：

Provided are a nanocrystalline thermal deformation neodymium-iron-boron permanent magnet and a preparing method thereof. The nanocrystalline thermal deformation neodymium-iron-boron permanent magnet is prepared from main alloy powder and auxiliary high-entropy alloy powder; the main alloy powder is composed of RexFe(100-x-y-z)MyBz on the basis of an atomic percent, wherein Re is one or more of La,Ce, Pr, Nd, Dy, Tb, Gd, Ho, Er, Y and the like, M is one or more of Co, Ga, Cu and Al, x is bigger than or equal to 12 and smaller than or equal to 15, y is bigger than or equal to 0.1 and smaller than or equal to 6, and z is bigger than or equal to 5 and smaller than or equal to 8; main elements of the auxiliary high-entropy alloy powder are FeCoNiM1M2, wherein M1 and M2 are one or more of Cu, Al, Cr, Mn, Ga, Zn, Sn, Mg, Si and B and are different, and all the elements are distributed on the basis of a high-entropy alloy design principle. The obtained nanocrystalline thermal deformation neodymium-iron-boron permanent magnet integrated magnet mixed with the high-entropy alloy powder with high plasticity and good soft magnetism is excellent in performance.

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