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公开(公告)号:US5733384A
公开(公告)日:1998-03-31
申请号:US793156
申请日:1997-02-11
申请人: Lei Cao , Axel Handstein , Karl-Hartmut Mueller , Ludwig Schultz , Volker Neu
发明人: Lei Cao , Axel Handstein , Karl-Hartmut Mueller , Ludwig Schultz , Volker Neu
CPC分类号: H01F1/058 , C22C1/0441
摘要: A process is provided for a technologically controllable, economic production of hard-magnetic parts from Sm.sub.2 --(Fe,M).sub.17 --C.sub.y -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 Sm.sub.2 Fe.sub.17-x M.sub.x C.sub.y powder mixture is produced, where x>0.1 and 3.gtoreq.y.gtoreq.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.degree. C. to 900.degree. C. for partial or complete recrystallization. The resulting ultra-fine-grain Sm.sub.2 Fe.sub.17-x M.sub.x C.sub.y magnetic powder is compacted to produce magnet bodies by a hot pressing processing in a temperature range from 650.degree. C. to 900.degree. C. The process is applicable, for example, for the production of hard-magnetic parts based on interstitial Sm.sub.2 Fe.sub.17 C.sub.y compounds.
摘要翻译: PCT No.PCT / EP96 / 02379第 371日期1997年2月11日 102(e)日期1997年2月11日PCT Filed 1996年6月1日PCT公布。 出版物WO97 / 00524 日期1997年1月3日提供了一种用于具有间隙夹杂物的Sm 2(Fe,M)17-Cy基础工作材料的技术可控,经济地生产硬磁性部件的方法,其中M表示镓和/或至少一种 用于稳定菱形2:17结构的金属元素。 产生Sm2Fe17-xMxCy粉末混合物,其中x> 0.1和3> / = y> / = 0。 混合物在球磨机中进行精细的细磨加工。 将精细研磨的混合物在650℃至900℃的温度范围内进行热处理,以进行部分或完全重结晶。 通过在650℃〜900℃的温度范围内的热压加工,将得到的超细晶粒Sm2Fe17-xMxCy磁性粉末压实,制成磁体。该方法适用于例如生产硬质 基于间隙Sm2Fe17Cy化合物的磁性部件。