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An magnetic powder and a method of producing of the same 发明授权

2023-10-03 3520 1184K 0

专利信息

申请日期 2025-07-12 申请号 KR1020190133659
公开(公告)号 KR102329436B1 公开(公告)日 2021-11-22
公开国别 KR 申请人省市代码 全国
申请人 한국재료연구원
简介 The present invention relates to a manufacturing method of iron oxide magnetic powder, comprising a step of preparing a precursor solution including an iron precursor and a silica precursor, a step of spraying the precursor solution to form iron/silica precursor droplets, a step of drying the iron/silica precursor droplets to manufacture iron/silica precursor particles having the iron precursor particles embedded in a silica precursor matrix, and a step of heat treating the iron/silica precursor particles to manufacture iron oxide/silica composite powder having iron oxide particles embedded in the silica matrix; and the iron oxide magnetic powder manufactured by the method. The present invention can provide iron oxide magnetic powder and a manufacturing method thereof without using a rare earth element.


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