基本信息:
- 专利标题： RARE-EARTH MAGNET
- 专利标题（中）：稀土磁铁
- 申请号：US13346756 申请日：2012-01-10
- 公开(公告)号：US20120175986A1 公开(公告)日：2012-07-12
- 发明人： Matahiro Komuro , Yuichi Satsu , Kunihiro Maeda , Yuzo Kozono
- 申请人： Matahiro Komuro , Yuichi Satsu , Kunihiro Maeda , Yuzo Kozono
- 优先权： JP2004-219494 20040728; JP2005-048167 20050224
- 主分类号： H02K21/12
- IPC分类号： H02K21/12 ; B32B15/04
摘要：
In a ferromagnetic material containing at least one kind of rare-earth element, a layer containing at least one kind of alkaline earth element or rare-earth element and fluorine is formed at the grain boundary or near the powder surface of the ferromagnetic material. A further layer containing at least one kind of rare-earth element, having a fluorine concentration lower than that of the layer described first and having a rare-earth element concentration higher than that of the host phase of the ferromagnetic material, or an oxide layer containing a rare-earth element is formed in adjacent with a portion of the layer described first.
摘要（中）：
在含有至少一种稀土元素的铁磁材料中，在铁磁材料的晶界或粉末表面附近形成含有至少一种碱土金属或稀土元素和氟的层。 含有至少一种稀土元素的另一层，其氟浓度低于首先介绍的层，其稀土元素浓度高于铁磁材料的主相，或氧化物层 含有稀土元素的层与第一层的一部分相邻地形成。
IPC结构图谱:
| H | 电学 |
| --H02 | 发电、变电或配电 |
| ----H02K | 电机 |
| ------H02K21/00 | 有永久磁体的同步电动机；有永久磁体的同步发电机 |
| --------H02K21/12 | .带有静止电枢和旋转磁体的 |