Sintered magnet and production method for sintered magnet

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United States of America

PATENT NO 12234534
SERIAL NO

17259253

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Abstract

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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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Patent Owner(s)

  • HITACHI, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Komuro, Matahiro Tokyo, JP 91 863
Satsu, Yuichi Tokyo, JP 73 667

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