
基本信息:
- 专利标题: Method for manufacturing magnetic metal powder, and magnetic metal powder
- 专利标题(中):Herstellungsverfahrenfürmagnetisches Metallpulver und magnetisches Metallpulver
- 申请号:EP02011581.2 申请日:2002-05-27
- 公开(公告)号:EP1263004A3 公开(公告)日:2003-10-22
- 发明人: Takaya, Minoru , Akachi, Yoshiaki , Kobuke, Hisashi , Umematsu, Hiroyuki
- 申请人: TDK Corporation
- 申请人地址: 13-1, Nihonbashi 1-chome Chuo-ku, Tokyo 103-8272 JP
- 专利权人: TDK Corporation
- 当前专利权人: TDK Corporation
- 当前专利权人地址: 13-1, Nihonbashi 1-chome Chuo-ku, Tokyo 103-8272 JP
- 代理机构: HOFFMANN - EITLE
- 优先权: JP2001163523 20010530
- 主分类号: H01F1/20
- IPC分类号: H01F1/20 ; H01F1/06
摘要:
A method for manufacturing magnetic metal powder is provided. In the method, a powdered magnetic metal oxide is supplied to a heat treatment furnace with a carrier gas composed of a reducing gas. The heat treatment furnace is maintained at temperatures above a reducing action starting temperature for the powdered magnetic metal oxide and above a melting point of the magnetic metal in the powder. The powdered magnetic metal oxide is subject to a reducing process, and then magnetic metal particles, the resultant reduced product, is melted to form a melt. The melt is recrystallized in a succeeding cooling step, to obtain single crystal magnetic metal power in substantially spherical form.
摘要(中):
提供一种制造磁性金属粉末的方法。 在该方法中,将粉末状的磁性金属氧化物供给到具有由还原气体构成的载气的热处理炉。 热处理炉保持在高于粉末状磁性金属氧化物的还原作用开始温度的温度以上且高于粉末中磁性金属的熔点。 粉末状磁性金属氧化物经历还原过程,然后将所得还原产物的磁性金属颗粒熔化以形成熔体。 熔融物在随后的冷却步骤中重结晶,以获得基本上为球形的单晶磁性金属功率。
公开/授权文献:
IPC结构图谱:
H | 电学 |
--H01 | 基本电气元件 |
----H01F | 磁体;电感;变压器;磁性材料的选择 |
------H01F1/00 | 按所用磁性材料区分的磁体或磁性物体;磁性材料的选择 |
--------H01F1/01 | .无机材料的 |
----------H01F1/03 | ..按其矫顽力区分的 |
------------H01F1/032 | ...硬磁材料的 |
--------------H01F1/14 | ....金属或合金 |
----------------H01F1/20 | .....颗粒状的,例如粉末 |