| 发明名称 |
MAGNETIC CORE, COIL COMPONENT AND MAGNETIC CORE MANUFACTURING METHOD |
| 摘要 |
A magnetic core has a structure in which alloy phases 20 each including Fe, Al, Cr and Si are dispersed and any adjacent two of the alloy phases 20 are connected to each other through a grain boundary phase 30. In this grain boundary phase 30, an oxide region is produced which includes Fe, Al, Cr and Si, and includes Al in a larger proportion by mass than the alloy phases 20. This magnetic core includes Al in a proportion of 3 to 10% both inclusive by mass, Cr in a proportion of 3 to 10% both inclusive by mass, and Si in a proportion more than 1% and 4% or less by mass provided that the sum of the quantities of Fe, Al, Cr and Si is regarded as being 100% by mass; and includes Fe and inevitable impurities as the balance of the core. |
| 申请公布号 |
US2017018343(A1) |
申请公布日期 |
2017.01.19 |
| 申请号 |
US201515124584 |
申请日期 |
2015.03.10 |
| 申请人 |
HITACHI METALS, LTD. |
发明人 |
NISHIMURA Kazunori;MIHARA Toshio;NOGUCHI Shin |
| 分类号 |
H01F1/147;B22F3/24;B22F1/00;C22C38/34;H01F41/02;C22C38/02;C21D9/40;C21D8/12;H01F1/22;H01F27/255;B22F3/02;C22C38/06 |
主分类号 |
H01F1/147 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A magnetic core, having a structure in which alloy phases each including Fe, Al, Cr and Si are dispersed and any adjacent two of the alloy phases are connected to each other through a grain boundary phase, and
having a composition which includes Al in a proportion of 3 to 10% both inclusive by mass, Cr in a proportion of 3 to 10% both inclusive by mass, and Si in a proportion more than 1% and 4% or less by mass provided that the sum of the quantities of Fe, Al, Cr and Si is regarded as being 100% by mass, and which includes Fe and inevitable impurities as the balance of the core, wherein the grain boundary phase comprises an oxide region including Fe, Al, Cr and Si, and includes Al in a larger proportion by mass than the alloy phases. |
| 地址 |
Tokyo JP |
