| 发明名称 |
SINTERED FERRITE MAGNET AND MOTOR PROVIDED THEREWITH |
| 摘要 |
Provided is a sintered ferrite magnet 10 that contains Sr ferrite having a hexagonal crystal structure, wherein the total amount of Na and K is 0.01 to 0.09% by mass in terms of Na2O and K2O, an amount of Si is 0.1 to 0.29% by mass in terms of SiO2, and the following Expression (1) is satisfied.;2.5≦(SrF+Ba+Ca+2Na+2K)/Si≦5.4 (1);[In Expression (1), SrF represents an amount of Sr, on a molar basis, other than Sr which constitutes the Sr ferrite, and Ba, Ca, Na, and K represent amounts of respective elements on a molar basis.] |
| 申请公布号 |
US2015053883(A1) |
申请公布日期 |
2015.02.26 |
| 申请号 |
US201314379012 |
申请日期 |
2013.02.20 |
| 申请人 |
TDK Corporation |
发明人 |
Taguchi Hitoshi |
| 分类号 |
H01F1/03;H02K1/02 |
主分类号 |
H01F1/03 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A sintered ferrite magnet, containing:
Sr ferrite having a hexagonal crystal structure, wherein a total amount of Na and K is 0.01 to 0.09% by mass in terms of Na2O and K2O, an amount of Si is 0.1 to 0.29% by mass in terms of SiO2, and the following Expression (1) is satisfied.
2.5≦(SrF+Ba+Ca+2Na+2K)/Si≦5.4 (1) [In Expression (1), SrF represents an amount of Sr, on a molar basis, other than Sr which constitutes the Sr ferrite, and Ba, Ca, Na, and K represent amounts of respective elements on a molar basis.] |
| 地址 |
Minato-ku, Tokyo JP |
