ANISOTROPIC COMPLEX SINTERED MAGNET COMPRISING MnBi WHICH HAS IMPROVED MAGNETIC PROPERTIES AND METHO

文件类型：PDF文档
文件大小：279K
The present invention relates to a method of preparing an anisotropic complex sintered magnet having MnBi, that includes : (a) preparing a non-magnetic phase MnBi-based ribbon by a rapidly solidification process (RSP); (b) heat treating the non-magnetic phase MnBi-based ribbon to convert the non-magnetic phase MnBi-based ribbon into a magnetic phase MnBi-based ribbon; (c) grinding the magnetic phase MnBi-based ribbon to form a MnBi hard magnetic phase powder; (d) mixing the MnBi hard magnetic phase powder with a rare-earth hard magnetic phase powder; (e) magnetic field molding the mixture obtained in step (d) by applying an external magnetic field to form a molded article; and (f) sintering the molded article.