| 申请日期 | 2024-11-30 | 申请号 | KR1020180103628 |
| 公开（公告）号 | KR102398932B1 | 公开（公告）日 | 2022-05-16 |
| 公开国别 | KR | 申请人省市代码 | 全国 |
| 申请人 | 주식회사 엘지화학 | ||
| 简介 | The preparation method of the magnetic powder according to an embodiment of the present invention comprises the step of preparing an iron powder by a reduction reaction of iron oxide, the step of preparing a magnetic powder using a molded body pressurized to a pressure of 22 MPa or more of a mixture including iron powder, rare earth oxides, boron and calcium, and coating the surface of the magnetic powder with ammonium fluoride. | ||
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