中文摘要：

Nd-Fe-B磁体具有较高的磁化强度和最大磁能积,PrCo5磁体具有较高的居里温度和温度稳定性。本文将快淬Nd-Fe-B与PrCo5磁粉混合,采用热压/热流变的方法,制备了各向异性Nd-Fe-B/PrCo5复合磁体。X射线衍射（XRD）、扫描电镜（SEM）及热磁曲线（M-T曲线）的测试结果均表明热流变复合磁体中Pr-Co合金仍然保持为PrCo5相。热流变复合磁体沿不同方向的磁滞回线以及XRD图谱表明经热流变处理后,复合磁体由各向同性转变为各向异性。SEM观察表明所添加的PrCo5在复合磁体中以较大的颗粒形式聚集存在,PrCo5周围主相晶粒取向变差,而且在两相界面处存在由于扩散作用而产生的成分复杂的过渡层,过渡层的存在也使得磁体性能降低。热流变复合磁体的可逆回复曲线在矫顽力附近存在峰值,峰值的出现与磁体的各向异性无关,过渡层与主相间可能存在一定的交换耦合作用。热流变复合磁体的磁性能为Br=1.323 T,Hcj=682.2 k A·m-1,（BH）m=239.6 k J·m-3。

英文摘要：

Nd-Fe-B magnets have high magnetization and maximum energy product while PrCo5 magnets have high Curie temperature and thermal stability. The anisotropic Nd-Fe-B/PrCo5 hybrid magnets were prepared by hot-pressing and deformation method using NdFe-B melt-spun powders and PrCo5 powders. The results of X-ray diffraction（ XRD）,scanning electron microscope（ SEM） and thermal magnetic analysis（ M-T curve） indicated that the Pr-Co alloy in the hybrid magnets still possessed the PrCo5 structure. The hysteresis loops along different directions of the hybrid magnets and the patterns of XRD showed the hybrid magnets were changing from isotropy to anisotropy. SEM images showed that the PrCo5 got together in the form of large particles and the orientation of the Nd2Fe14B around PrCo5 was deteriorated. It was found that a complex transition layer appeared in the interface of the two phases,which resulted from the diffusion between Nd2Fe14B and PrCo5. The transition layer deteriorated the magnetic properties. The peak of the normalized reversible demagnetization curve of the hybrid magnets around the coercivity was irrelevant with anisotropy,because there might exist exchange-coupling effect between the transition layer and the matrix. The properties of the hot-deformed hybrid magnet were： Br=1. 323 T,Hcj= 682. 2 k A·m-1,（ BH）m= 239. 6 k J·m-3.