63.3Fe36.7合金制備N(xiāo)dFeB再生磁體。在未添加Ho63.3Fe36.7的磁體中，沒(méi)有足夠的富Nd相隔離Nd2Fe14B相，從而導(dǎo)致磁體性能較差；隨著Ho63.3Fe36.7合金的加入，晶界相變得清晰且連續(xù)。在質(zhì)量分?jǐn)?shù)2%Ho63.3Fe36.7添加量下，釹鐵硼再生磁體獲得最佳磁性能[(BH)max+Hcj=1756.07]。此時(shí)矯頑力增加123 kA/m（約提高9.1%），磁體的最大能積由290.94 kJ/m3下降到281.07 kJ/m3，而剩磁少量下降。通過(guò)對(duì)再生磁體顯微組織和成分的分析可知，磁體晶界處形成了(Nd, Pr, Ho)2Fe14B殼層，這能夠提高磁體的矯頑力。而X射線衍射分析表明，磁體I(006)/I(105)的衍射峰強(qiáng)度比從0.92提高到1.32。這說(shuō)明磁體取向度提高，可以減弱對(duì)剩磁的影響，從而使得再生磁體在保持剩磁的同時(shí)提高磁體的矯頑力。;A high-efficiency and green physical method was proposed to clean the surface of NdFeB waste magnets for recycling. NdFeB regenerated magnets were fabricated by adding low-melting point Ho63.3Fe36.7 alloy to grain boundaries. Results show that in magnets without Ho63.3Fe36.7, there are insufficient Nd-rich phases to isolate the Nd2Fe14B phase, leading to poor magnet performance. With the addition of Ho63.3Fe36.7 alloy, the grain boundary phases become clear and concatenated. Optimal magnetic energy [(BH) max+Hcj=1756.07] can be obtained by adding 2wt% Ho63.3Fe36.7 to the magnet. Further, the coercivity increases by 123 kA/m (approximately 9.1%), the maximum magnetic energy product decreases from 290.94 kJ/m3 to 281.07 kJ/m3, and remanence decreases slightly. Through analysis of the microstructure and composition, it can be seen that the (Nd, Pr, Ho)2Fe14B shell layers form at the grain boundary, which enhances the coercivity of the magnet. X-ray diffraction analysis suggests that the diffraction peak intensity ratio of magnet I(006)/I(105) increases from 0.92 to 1.32, which indicates that the alignment degree is improved and the influence on remanence is weakened. Therefore, regenerated magnets can possess improved coercivity while maintaining magnetic remanence."/>