Title:
焼結磁石および焼結磁石の製造方法
Document Type and Number:
Japanese Patent JP7096729
Kind Code:
B2
Abstract:
Provided are: a sintered magnet having an improved maximum energy product while maintaining the magnetic coercivity of the magnet; and a production method for such a sintered magnet. The sintered magnet (10a) according to the present invention comprises particles (6) each including: a main phase (2) in which the main component is a compound containing a rare-earth element and iron; and a diffusion layer (1) provided on the surface of the main phase (2). The diffusion layers (1) are characterized by: containing, as a main component, a compound resulting from a solid-solution of carbon and/or nitrogen in said compound of the main phase (2); and having a concentration gradient of carbon and/or nitrogen from the surfaces of the particles (6) toward the interior thereof.
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Inventors:
Komuro Matahiro
Yuichi Sado
Yuichi Sado
Application Number:
JP2018143675A
Publication Date:
July 06, 2022
Filing Date:
July 31, 2018
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H01F1/055; B22F3/00; B22F3/24; C22C38/00; H01F1/057; H01F41/02
Domestic Patent References:
| JP2013098447A | ||||
| JP61208806A | ||||
| JP8500939A | ||||
| JP2012204823A |
Attorney, Agent or Firm:
Polar Patent Attorney Corporation