Invention Grant
- Patent Title: Permanent magnet, motor, and generator
- Patent Title (中): 永磁体，电动机和发电机
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Application No.: US14661107Application Date: 2015-03-18
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Publication No.: US09502164B2Publication Date: 2016-11-22
- Inventor: Yosuke Horiuchi , Shinya Sakurada , Keiko Okamoto , Masaya Hagiwara , Tsuyoshi Kobayashi , Masaki Endo , Tadahiko Kobayashi
- 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: H02K21/00
- IPC: H02K21/00 ; H02K15/12 ; H01F1/057 ; H01F1/053 ; H01F1/055 ; C22C19/07 ; C22F1/10 ; H02K1/02 ; H02K1/27 ; C22C30/02 ; H01F1/059
Abstract:
A permanent magnet includes: a composition expressed by a composition formula: RpFeqMrCutCo100-p-q-r-t (R is at least one element selected from rare-earth elements, M is at least one element selected from Zr, Ti, and Hf, 10.5≦p≦12.5 at %, 23≦q≦40 at %, 0.88≦r≦4.5 at %, 4.5≦t≦10.7 at %); and a metal structure containing a cell phase having a Th2Zn17 crystal phase, a cell wall phase, an M-rich platelet phase formed vertically to a c-axis of the Th2Zn17 crystal phase, and a Cu-rich platelet phase formed along the M-rich platelet phase.
Public/Granted literature
- US20150194246A1 PERMANENT MAGNET, MOTOR, AND GENERATOR Public/Granted day:2015-07-09
Information query
