发明名称 MANUFACTURE OF MN-AL-C MAGNET
摘要 PURPOSE:To inexpensively obtain an Mn-Al-C magnet of high performance in a high yield by cold molding powder of an Mn-Al-C material having a prescribed composition, sintering the molded body in an evacuated atmosphere under a specified partial pressure of gaseous CO, and subjecting the sintered body to solubilizing heat treatment. CONSTITUTION:A magnet material consisting of 70wt% Mn, 29.5wt% Al and 0.5wt% c is cast, pulverized, and cold molded into a prescribed shape. The molded body is sintered at a prescribed temp. in an evacuated atmosphere under 1-100 Torr partial pressure of gaseous CO. The sintered body is subjected to solubilizing heat treatment in a cooling stage. By this method a lightweight powerful sintered Mn-Al-C magnet having maximum energy product about 2 times that of isotropic ferrite can be manufactured easily.
申请公布号 JPS5819405(A) 申请公布日期 1983.02.04
申请号 JP19810116810 申请日期 1981.07.25
申请人 SUMITOMO DENKI KOGYO KK 发明人 TAKEDA YOSHINOBU;KUROISHI ATSUSHI;HARA AKIO
分类号 B22F3/00;C22C1/04 主分类号 B22F3/00
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