| 发明名称 |
POWDER MAGNETIC CORE AND METHOD FOR PRODUCING SAME |
| 摘要 |
Provided is a powder magnetic core (1), including; a magnetic core main body (2) obtained by compression-molding raw material powder containing, as a main component, soft magnetic metal powder (3) having a surface coated with an insulating coating (4) having a decomposition temperature of 600° C. or more; and a sealing part (6) configured to seal inner pores of the magnetic core main body (2), in which: the magnetic core main body (2) has a relative density of 94.5% or more and 97% or less; and the powder magnetic core (1) has a porosity of 2.0% or less. |
| 申请公布号 |
US2017040094(A1) |
申请公布日期 |
2017.02.09 |
| 申请号 |
US201415106347 |
申请日期 |
2014.11.27 |
| 申请人 |
NTN Corporation |
发明人 |
KAKO Noritaka;ARAKI Hikaru;SHIMAZU Eiichirou |
| 分类号 |
H01F1/24;H02K1/02;H01F27/255;H01F41/02 |
主分类号 |
H01F1/24 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A powder magnetic core, comprising:
a magnetic core main body, which is obtained by compression-molding raw material powder containing, as a main component, soft magnetic metal powder having a surface coated with an insulating coating having a decomposition temperature of 600° C. or more, and which has a relative density of 94.5% or more and 97% or less; and a sealing part configured to seal inner pores of the magnetic core main body, wherein the powder magnetic core has a porosity of 2.0% or less. |
| 地址 |
Osaka JP |
