Abstract High density sintered Sm(Fe0.8Co0.2)11Ti bulk magnets were successfully produced using a newly developed high pressure pressing fabrication method. The purity of the hard magnetic ThMn12 phase in the bulk magnet reached to higher than 97 wt.%. The phase transformation behavior from amorphous to ThMn12 phase during heat treatment was systematically investigated by transmission electron microscopy. The remanent magnetization and maximum energy product of a bulk magnet were 96.0 emu/g and 12.22 MGOe, respectively. To the best of our knowledge, the achieved maximum energy product is the highest among all the SmFe12-based bulk magnets reported.

中文翻译：

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全致密Sm(Fe0.8Co0.2)11Ti块状磁铁的相变和磁性能

摘要 采用新开发的高压压制制造方法成功制备了高密度烧结Sm(Fe0.8Co0.2)11Ti块状磁铁。块状磁铁中硬磁 ThMn12 相的纯度达到 97% 以上。通过透射电子显微镜系统地研究了热处理过程中从非晶态到 ThMn12 相的相变行为。块状磁铁的剩磁和最大能积分别为 96.0 emu/g 和 12.22 MGOe。据我们所知，达到的最大能量积是所有 SmFe12 基块状磁铁中最高的。