发明授权
US5137587A Process for the production of shaped body from an anisotropic magnetic
material based on the Sm-Fe-N system
失效
基于SM-FE-N系统的ANISOTROPIC磁性材料生产成形体的工艺
- 专利标题： Process for the production of shaped body from an anisotropic magnetic material based on the Sm-Fe-N system
- 专利标题（中）： 基于SM-FE-N系统的ANISOTROPIC磁性材料生产成形体的工艺
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申请号： US735651申请日： 1991-07-25
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公开(公告)号： US5137587A公开(公告)日： 1992-08-11
- 发明人: Ludwig Schultz , Kurt Schnitzke , Joachim Wecker , Matthias Katter
- 申请人： Ludwig Schultz , Kurt Schnitzke , Joachim Wecker , Matthias Katter
- 申请人地址： DEX Berlin & Munich
- 专利权人： Siemens Aktiengesellschaft
- 当前专利权人： Siemens Aktiengesellschaft
- 当前专利权人地址： DEX Berlin & Munich
- 优先权： DEX4025278 19900809
- 主分类号： H01F1/053
- IPC分类号： H01F1/053 ; C04B35/58 ; H01F1/059 ; H01F7/02 ; H01F41/02
摘要：
A shaped body of anisotropic magnetic material based on the Sm-Fe-N system which has a crystalline, hard magnetic phase with a Th.sub.2 Zn.sub.17 crystal structure, wherein N atoms are incorporated in the crystal lattice, is produced by compacting a powder Sm-Fe preliminary product with an Sm-Fe phase having a magnetically isotropic structure, followed by hot-shaping to provide an intermediate product with a Sm-Fe phase having a magnetically anisotropic structure, followed by heat treating the intermediate product in a nitrogen atmosphere to provide a Sm-Fe-N hard magnetic phase.
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