PRODUCTION OF RARE-EARTH METAL AND IRON-BASED MAGNET

摘要

PURPOSE:To realize a high energy product in a production method where an anisotropic Nd-Fe-B based magnetic powder is fixed to obtain a bulk magnet. CONSTITUTION:When a mixed power consisting essentially of at least 50wt.% anisotropic Nd-Fe-B based magnetic powder and isotropic Nd-Fe-B based magnetic powder is magnetic-field oriented and fixed by compression and energization in order to obtain a bulk magnet, a ratio (Po/Lo) of the mean particle diameter Po of the anisotropic Nd-Fe-B based magnetic powder and the oriented direction distance Lo of the bulk magnet is set to at least 0.6.