Invention Grant
- Patent Title: Rare earth magnet
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Application No.: US15560907Application Date: 2016-03-25
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Publication No.: US10991493B2Publication Date: 2021-04-27
- 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: JP2015-061888 20150325,JP2015-061890 20150325,JPJP2015-061889 20150325
- International Application: PCT/JP2016/059734 WO 20160325
- International Announcement: WO2016/153057 WO 20160929
- Main IPC: H01F1/053
- IPC: H01F1/053 ; H01F1/057 ; 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 Ga. A concentration ratio A (A=αGa/βGa) of the main phase grains is 1.20 or more, where αGa and βGa are respectively a highest concentration of Ga and a lowest concentration of Ga in one main phase grain.
Public/Granted literature
- US20180082772A1 RARE EARTH MAGNET Public/Granted day:2018-03-22
Information query
