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11. 发明专利

JP2005068526A Method of producing composite magnetic particle powder molded body 审中-公开
标题翻译：生产复合磁粉颗粒成型体的方法
公开(公告)号：JP2005068526A
公开(公告)日：2005-03-17
申请号：JP2003303184
申请日：2003-08-27
申请人： Fuji Electric Holdings Co Ltd , 富士電機ホールディングス株式会社
发明人： UCHIDA SHINJI , OKAMOTO KENJI
IPC分类号： B22F3/105 , B22F1/02 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide a method of producing a composite magnetic particle powder molded body of low loss having excellent permeability and saturation magnetization intensity even in a high frequency band.
SOLUTION: The powder of composite magnetic particles in which the surfaces of permalloy particles 1 as metallic magnetic particles are coated with a ferrite film 2 as an oxide magnetic film is filled into a die made of graphite, and is sintered and molded in a vacuum using a discharge plasma sintering apparatus. The relative density of the molded body subjected to the sintering reaction is preferably controlled to the range of 80 to 96%. As the material for the metal magnetic particles, e.g., single metals such as iron, cobalt and nickel, superalloy, or alloys using these metals as the base can be used in addition to permalloy. Further, as the material for the ferrite film, e.g., NiZn ferrite, Co ferrite, Mg ferrite, CoZn ferrite or composite ferrite using these ferrite as the main components can be used.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：即使在高频带中也提供了具有优异的磁导率和饱和磁化强度的低损耗复合磁粉颗粒粉末成型体的制造方法。解决方案：将作为金属磁性颗粒的坡莫合金颗粒1的表面涂覆有作为氧化物磁性膜的铁氧体膜2的复合磁性颗粒的粉末填充到由石墨制成的模具中，并烧结并模制在使用放电等离子体烧结装置的真空。进行烧结反应的成型体的相对密度优选控制在80〜96％的范围。作为金属磁性颗粒的材料，例如铁，钴和镍等单一金属，可以使用这些金属作为基体的超合金或合金作为坡莫合金。此外，可以使用铁氧体膜的材料，例如NiZn铁氧体，Co铁氧体，Mg铁氧体，CoZn铁氧体或使用这些铁氧体作为主要成分的复合铁氧体。版权所有（C）2005，JPO＆NCIPI

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