发明申请
- 专利标题: METALLIC MAGNETIC POWDER AND MANUFACTURING METHOD OF THE SAME, MAGNETIC PAINTING, MAGNETIC POWDER FOR MAGNETIC THERAPY, AND MAGNETIC RECORDING MEDIUM
- 专利标题(中): 金属磁粉及其制造方法,磁性涂料,磁性磁粉用于磁疗和磁记录介质
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申请号: US13103410申请日: 2011-05-09
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公开(公告)号: US20110305924A1公开(公告)日: 2011-12-15
- 发明人: Dong Chul PYUN , Heemin YOO , Hirohisa OMOTO , Takayuki YOSHIDA
- 申请人: Dong Chul PYUN , Heemin YOO , Hirohisa OMOTO , Takayuki YOSHIDA
- 申请人地址: JP Tokyo US AZ Tucson
- 专利权人: DOWA ELECTRONICS MATERIALS CO., LTD.,THE ARIZONA BOARD OF REGENTS
- 当前专利权人: DOWA ELECTRONICS MATERIALS CO., LTD.,THE ARIZONA BOARD OF REGENTS
- 当前专利权人地址: JP Tokyo US AZ Tucson
- 优先权: JP2010-110360 20100512
- 主分类号: G11B5/33
- IPC分类号: G11B5/33 ; B05D5/00 ; B05D3/00 ; B32B5/16
摘要:
A metallic magnetic powder where a primary particle of each metallic magnetic particle is a powder without forming an aggregate, and a method of making the same that includes manufacturing a metallic magnetic powder constituted of metallic magnetic particles, containing a metallic magnetic phase, with Fe, or Fe and Co as main components, rare earth elements , or yttrium and one or more non-magnetic components removing the non-magnetic component from the metallic magnetic with a reducing agent, while making a complexing agent exist for forming a complex with the non-magnetic component in water; oxidizing the metallic magnetic particle with the non-magnetic component removed; substituting water adhered to the oxidized metallic magnetic particle with an organic solvent; andcoating the surface of the metallic magnetic particle with an organic matter different from the organic solvent, while maintaining a wet condition of the metallic magnetic particle with the organic solvent adhered thereto.
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