Invention Grant
- Patent Title: Permanent magnet, rotary electrical machine, and vehicle
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Application No.: US17375064Application Date: 2021-07-14
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Publication No.: US11676747B2Publication Date: 2023-06-13
- Inventor: Masaya Hagiwara , Yosuke Horiuchi , Shinya Sakurada
- Applicant: KABUSHIKI KAISHA TOSHIBA
- Applicant Address: JP Tokyo
- Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee Address: JP Tokyo
- Agency: Amin, Turocy & Watson, LLP
- Main IPC: H01F1/055
- IPC: H01F1/055 ; B22F3/24 ; C22C38/16 ; C22C38/14 ; C22C38/10 ; H01F41/02 ; C22C38/00 ; C22C19/07
Abstract:
A permanent magnet is expressed by a composition formula: RpFeqMrCusCo100-p-q-r-s. The magnet includes a crystal grain having a main phase including a TbCu7 crystal phase, and a volume ratio of the TbCu7 crystal phase to the main phase is 95% or more.
Public/Granted literature
- US20210343457A1 PERMANENT MAGNET, ROTARY ELECTRICAL MACHINE, AND VEHICLE Public/Granted day:2021-11-04
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