发明名称 |
Process for producing ferro-magnetic metal particles |
摘要 |
Ferromagnetic metal particles of high quality are produced by a process which comprises heat-treating starting material particles selected from the group consisting of the particles of ferromagnetic metals, ferromagnetic alloys, and oxides and hydroxides of ferromagnetic metals, in a reducing atmosphere at a temperature required for converting the material particles into ferromagnetic metal particles of improved magnetic properties. Electrostatic charges are imparted to the material particles during the heat treatment, whereby aggregation of material particles is hindered during the treatment.
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申请公布号 |
US4318757(A) |
申请公布日期 |
1982.03.09 |
申请号 |
US19800146878 |
申请日期 |
1980.05.05 |
申请人 |
TDK ELECTRONICS CO., LTD. |
发明人 |
HORIMOTO, RIOICHI;SEIKE, RIYUUZOU |
分类号 |
B22F1/00;B22F9/22;H01F1/06;(IPC1-7):H01F1/02 |
主分类号 |
B22F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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