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METALLIC MAGNETIC POWDER AND PRODUCTION METHOD THEREFOR 发明申请

2023-09-20 1830 318K 0

专利信息

申请日期 2025-07-08 申请号 JP2011078225
公开(公告)号 JP2012212807A 公开(公告)日 2012-11-01
公开国别 JP 申请人省市代码 全国
申请人 DOWA ELECTRONICS MATERIALS CO LTD
简介 PROBLEM TO BE SOLVED : To provide a metallic magnetic powder in which independence of particles can be enhanced by suppressing the aggregation of particles even if the particle size is reduced, and dispersibility can be improved when it is used in a magnetic paint while increasing the bulk density, and to provide a production method therefor. SOLUTION : The metallic magnetic powder is produced by adding a dispersant composed of a compound having a carboxyl group to a slurry of iron oxyhydroxide (α-FeOOH) thereby wet-pulverizing the slurry of iron oxyhydroxide, and then coating the surface of particles of iron oxyhydroxide thus obtained with a sintering prevention component containing one kind or more selected from rare earth elements (including yttrium) and reducing the iron oxyhydroxide. COPYRIGHT : (C)2013, JPO&INPIT


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