Invention Grant
- Patent Title: Preparation of rare earth permanent magnet
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Application No.: US15782875Application Date: 2017-10-13
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Publication No.: US10526715B2Publication Date: 2020-01-07
- Inventor: Yukihiro Kuribayashi , Yoshifumi Nagasaki
- Applicant: Shin-Etsu Chemical Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2014-029667 20140219
- Main IPC: C25D7/00
- IPC: C25D7/00 ; C25D5/34 ; C25D5/50 ; H01F1/053 ; H01F41/00

Abstract:
A rare earth permanent magnet is prepared by immersing a portion of a sintered magnet body of R1—Fe—B composition (wherein R1 is a rare earth element) in an electrodepositing bath of a powder dispersed in a solvent, the powder comprising an oxide, fluoride, oxyfluoride, hydride or rare earth alloy of a rare earth element, effecting electrodeposition for letting the powder deposit on a region of the surface of the magnet body, and heat treating the magnet body with the powder deposited thereon at a temperature below the sintering temperature in vacuum or in an inert gas.
Public/Granted literature
- US20180044810A1 PREPARATION OF RARE EARTH PERMANENT MAGNET Public/Granted day:2018-02-15
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