高Ce 含量的速凝带及其磁性能

近年来，Nd-Fe-B磁体需求量的与日俱增间接地造成了稀土Ce 金属的大量积压，为提高稀土Ce 的利 用率，并降低Nd-Fe-B磁体的生产成本，可采取双主相合金法制备（Nd, Ce）-Fe-B磁体，为解决上述难题提供 了一种有效途径。通过对高Ce 含量速凝带的成分及速凝工艺的探索，成功制备出了具有较好枝晶且几乎 不含α-Fe 相的Ce-Fe-B 和（Nd, Ce）-Fe-B 速凝带。在制备的烧结磁体中，（Nd, Ce）-Fe-B 磁体的剩磁达到了 11.33 kGs，Ce-Fe-B磁体的剩磁达到了8.037 kGs，为后期制定制备高Ce 含量的高性能双主相磁体的热处理工 艺提供了数据参考。

Study on the strip casting with high Ce content and its magnetic properties

The increasing demand for Nd-Fe-B magnets has resulted in a large backlog of rare-earth Ce metals indirectly. In order to improve the utilization rate of rare-earth Ce and reduce the production cost of Nd-Fe-B magnets, （Nd, Ce）-Fe-B magnets could be prepared by dual-main phase alloy method, which provided an effective way to solve the above problem. By exploring the composition of high Ce-contained strip casting and preparation process, Ce-Fe-B and（Nd, Ce）-Fe-B strip casting with good dendrites structure and almost no α-Fe phase have been successfully prepared. Among the prepared sintered magnets, the remanence of（Nd, Ce）-Fe-B magnets reaches to 11.33 kGs and that of Ce-Fe-B magnets reaches to 8.037 kGs, which provide data guidance for the later preparation of high performance and high Ce-contained dual-main phase sintered magnets.