发明授权
- 专利标题: Method of manufacturing ferromagnetic magnetic metal powder
- 专利标题(中): 铁磁性金属粉末制造方法
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申请号: US20142申请日: 1979-03-13
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公开(公告)号: US4221614A公开(公告)日: 1980-09-09
- 发明人: Minoru Yoda , Yasumichi Tokuoka
- 申请人: Minoru Yoda , Yasumichi Tokuoka
- 申请人地址: JPX Tokyo
- 专利权人: TDK Electronics Co., Ltd.
- 当前专利权人: TDK Electronics Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX53-28203 19780314
- 主分类号: B22F1/00
- IPC分类号: B22F1/00 ; H01F1/06 ; H01F1/02
摘要:
A method of manufacturing a ferromagnetic metal powder characterized by continuously drying a slurry of ferromagnetic metal powder formed by wet reduction, in a non-oxidizing gas atmosphere, and subsequently continuously heat-treating the dried ferromagnetic metal powder in a non-oxidizing gas atmosphere. The continuous method prevents the ferromagnetic metal powder from being exposed to excess oxygen to enhance the magnetic properties of the ferromagnetic metal powder. Also, the production efficiency is enhanced.
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