Invention Grant
- Patent Title: Rare earth magnet
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Application No.: US15560695Application Date: 2016-03-25
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Publication No.: US10984929B2Publication Date: 2021-04-20
- Inventor: Wakako Okawa , Syota Goto , Yoshinori Fujikawa
- Applicant: TDK CORPORATION
- Applicant Address: JP Tokyo
- Assignee: TDK CORPORATION
- Current Assignee: TDK CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JPJP2015-061888 20150325,JPJP2015-061889 20150325,JPJP2015-061890 20150325
- International Application: PCT/JP2016/059732 WO 20160325
- International Announcement: WO2016/153056 WO 20160929
- Main IPC: H01F1/057
- IPC: H01F1/057 ; H01F41/02 ; C22C38/00 ; H01F1/08 ; C22C38/02 ; C22C38/06 ; C22C38/10 ; C22C38/16 ; B22F3/16 ; B22F3/24 ; B22F9/04 ; C22C28/00 ; C22C30/00 ; B22F3/00
Abstract:
A rare earth magnet includes main phase grains having an R2T14B type crystal structure. The main phase grains include C. A concentration ratio A1 (A1=αC/βC) of the main phase grains is 1.50 or more, where αC and βC are respectively a highest concentration of C and a lowest concentration of C in one main phase grain.
Public/Granted literature
- US20180108463A1 RARE EARTH MAGNET Public/Granted day:2018-04-19
Information query
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