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发明授权
CN106601407B 提高钕铁硼磁体矫顽力的方法 有权

提高钕铁硼磁体矫顽力的方法
摘要：
本发明公开了一种提高钕铁硼磁体矫顽力的方法。将R1‑Fe‑B‑M1型粉末作为主相合金粉末，将R1‑R2‑Fe‑B‑M1型粉末作为辅相合金粉末，将所述主相合金粉末与所述辅相合金粉末混合，从而使得所述辅相合金粉末均匀分布在所述主相合金粉末的表面；其中，R1包括Nd和Pr；M1选自Co、Cu、Zr、Al、Ga、Si、Mn、Ni、Zn、Ge、Pd、Ag、Cd、In、Sn、Sb、Pt、Au、Hg、Pb和Bi中的一种或多种；R2选自Gd、Dy、Tb、Ho、Er、Tm、Yb、Lu、Y中的一种或多种。本发明采用相容性很好的主相合金粉末与辅相合金粉末，可以显著提高钕铁硼磁体的矫顽力，并降低重稀土的使用量。
摘要（英）：

The invention discloses a method for improving coercivity of an Nd-Fe-B magnet. The method comprises the following steps: taking an R1-Fe-B-M1 type powder as a main phase alloy powder, and taking an R1-R2-Fe-B-M1 type powder as an auxiliary phase alloy powder; mixing the main phase alloy powder and the auxiliary phase alloy powder, so as to make the auxiliary phase alloy powder uniformly distributed on the surface of the main phase alloy powder; R1 comprises Nd and Pr; M1 is selected from one or more of Co, Cu, Zr, Al, Ga, Si, Mn, Ni, Zn, Ge, Pd, Ag, Cd, In, Sn, Sb, Pt, Au, Hg, Pb and Bi; and R2 is selected from one or more of Gd, Dy, Tb, Ho, Er, Tm, Yb, Lu and Y. The method for improving the coercivity of the Nd-Fe-B magnet provided by the invention adopts the main phase alloy powder and the auxiliary phase alloy powder with good compatibility, so that the coercivity of the Nd-Fe-B magnet can be obviously improved, and the usage amount of heavy rare earths can be reduced.

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