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Patent Searching and Data


Title:
SINTERED MAGNET AND PRODUCTION METHOD FOR SINTERED MAGNET
Document Type and Number:
WIPO Patent Application WO/2020/026501
Kind Code:
A1
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.

Inventors:
KOMURO MATAHIRO (JP)
SATSU YUICHI (JP)
Application Number:
JP2019/009396
Publication Date:
February 06, 2020
Filing Date:
March 08, 2019
Export Citation:
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Assignee:
HITACHI LTD (JP)
International Classes:
H01F1/055; B22F3/00; B22F3/24; C22C38/00; H01F1/057; H01F41/02
Foreign References:
JP2013098447A2013-05-20
JPS61208806A1986-09-17
JPH08500939A1996-01-30
JP2012204823A2012-10-22
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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