| 发明名称 |
MAGNETIC CORE AND COIL COMPONENT USING SAME |
| 摘要 |
A magnetic core has a structure in which Fe-based soft magnetic alloy particles are connected via a grain boundary. The Fe-based soft magnetic alloy particles contain Al, Cr and Si. An oxide layer containing at least Fe, Al, Cr and Si is formed at the grain boundary that connects the neighboring Fe-based soft magnetic alloy particles. The oxide layer contains an amount of Al larger than that in Fe-based soft magnetic alloy particles, and includes a first region in which the ratio of Al is higher than the ratio of each of Fe, Cr and Si to the sum of Fe, Cr, Al and Si, and a second region in which the ratio of Fe is higher than the ratio of each of Al, Cr and Si to the sum of Fe, Cr, Al and Si. The first region is on the Fe-based soft magnetic alloy particle side. |
| 申请公布号 |
US2016336104(A1) |
申请公布日期 |
2016.11.17 |
| 申请号 |
US201515111202 |
申请日期 |
2015.01.14 |
| 申请人 |
Hitachi Metals, Ltd. |
发明人 |
NOGUCHI Shin;NISHIMURA Kazunori;MIHARA Toshio |
| 分类号 |
H01F27/255;C22C38/08;C22C38/06;C22C38/04;C22C38/02;H01F27/28;B22F9/08;B22F1/00;B22F9/04;B22F3/24;B22F3/04;B22F3/03;C22C38/18;C22C38/00 |
主分类号 |
H01F27/255 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A magnetic core having a structure in which Fe-based soft magnetic alloy particles are connected via a grain boundary, wherein
the Fe-based soft magnetic alloy particle contains Al, Cr and Si, and an oxide layer containing at least Fe, Al, Cr and Si is formed at the grain boundary that connects the neighboring Fe-based soft magnetic alloy particles, the oxide layer contains an amount of Al larger than that in Fe-based soft magnetic alloy particles in terms of a mass ratio, and includes a first region in which the ratio of Al is higher than the ratio of each of Fe, Cr and Si to the sum of Fe, Cr, Al and Si, and a second region in which the ratio of Fe is higher than the ratio of each of Al, Cr and Si to the sum of Fe, Cr, Al and Si, and the first region is situated on the Fe-based soft magnetic alloy particle side. |
| 地址 |
Tokyo JP |
