发明名称 |
Iron nitride magnetic powder and method of producing the powder |
摘要 |
<p>An iron nitride magnetic powder comprised primarily of Fe<Sub>16</Sub>N<Sub>2</Sub> phase is characterized in that its coercive force Hc is 200 KA/m or greater and bulk switching field distribution BSDF is 2 or less. The magnetic powder can be produced by allowing a nitriding reaction of Fe particles with a nitrogen-containing gas for producing nitrided particles of primarily Fe<Sub>16</Sub>N<Sub>2</Sub> phase to proceed under an increased pressure of 0.1 MPa or greater. The enhanced properties of the iron nitride magnetic powder make it suitable as a magnetic material for high-density magnetic recording media.</p> |
申请公布号 |
EP1548760(A3) |
申请公布日期 |
2007.12.26 |
申请号 |
EP20040027437 |
申请日期 |
2004.11.18 |
申请人 |
DOWA ELECTRONICS MATERIALS CO., LTD. |
发明人 |
MASADA, KENJI;AMINO, TAKAFUMI;NAGATOMI, AKIRA |
分类号 |
H01F1/01;H01F1/06;B22F9/00;C01B21/06;C22C29/16;G11B5/706;H01F1/047;H01F1/053 |
主分类号 |
H01F1/01 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|