Abstract (Nd,Pr)-Fe-B powders were mixed with Tb13Fe81B6 powders to prepare sintered (Nd,Pr,Tb)-Fe-B magnetic materials. A little amount addition of Tb13Fe81B6 powders leads to a faster increase of coercivity, and the coercivity increases from 14.95 kOe to 18.93 kOe at the mass ratio 9.7:0.3 of (Nd,Pr)-Fe-B and Tb13Fe81B6. For the mass ratio of Tb13Fe81B6 more than 0.3 the coercivity increases nearly linearly. Both the remanence and the maximum energy product decrease slightly for a little amount addition of Tb13Fe81B6. The investigation by energy dispersive spectrometer shows that though there are dual main phases in the sintered magnets, the chemical compositions of main phase are much different from those of the master alloys due to the atomic diffusion. It is expected to improve the coercivity more largely by optimizing the element distribution in the sintered composite magnets.

中文翻译：

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烧结(Nd,Pr)-Fe-B/Tb-Fe-B复合磁体的磁性和元素分布

摘要 将(Nd,Pr)-Fe-B粉体与Tb13Fe81B6粉体混合制备烧结(Nd,Pr,Tb)-Fe-B磁性材料。少量添加Tb13Fe81B6粉末导致矫顽力增加较快，当(Nd,Pr)-Fe-B和Tb13Fe81B6的质量比为9.7:0.3时，矫顽力从14.95 kOe增加到18.93 kOe。对于大于 0.3 的 Tb13Fe81B6 质量比，矫顽力几乎呈线性增加。少量添加Tb13Fe81B6，剩磁和最大能积均略有下降。能谱仪的研究表明，虽然烧结磁体中存在双主相，但由于原子扩散，主相的化学成分与母合金的化学成分有很大不同。