Process for producing hard-magnetic parts

摘要

PCT No. PCT/EP96/02379 Sec. 371 Date Feb. 11, 1997 Sec. 102(e) Date Feb. 11, 1997 PCT Filed Jun. 1, 1996 PCT Pub. No. WO97/00524 PCT Pub. Date Jan. 3, 1997A process is provided for a technologically controllable, economic production of hard-magnetic parts from Sm2-(Fe,M)17-Cy-base work materials with interstitial inclusions, where M designates gallium and/or at least one metallic element serving to stabilize a rhombohedral 2:17 structure. A Sm2Fe17-xMxCy powder mixture is produced, where x>0.1 and 3>/=y>/=0. The mixture is subjected to an intensive fine grinding process in a ball mill. The finely ground mixture is heat-treated in a temperature range from 650 DEG C. to 900 DEG C. for partial or complete recrystallization. The resulting ultra-fine-grain Sm2Fe17-xMxCy magnetic powder is compacted to produce magnet bodies by a hot pressing processing in a temperature range from 650 DEG C. to 900 DEG C. The process is applicable, for example, for the production of hard-magnetic parts based on interstitial Sm2Fe17Cy compounds.