RARE EARTH MAGNET AND PRODUCTION METHOD THEREOF

[SUMMARY][PROBLEM TO BE SOLVED]To provide a rare earth magnet protected from reduction in the coercive force at high temperatures and a production method thereof.[MEANS TO SOLVE THE PROBLEM]A rare earth magnet comprising a main phase and a grain boundary phase present around the main phase, wherein:...

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Bibliographic Details
Main Authors Ito, Masaaki, Shoji, Tetsuya, Ichigozaki, Daisuke, Sakuma, Noritsugu
Format Patent
LanguageEnglish
French
German
Published 07.08.2019
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Summary:[SUMMARY][PROBLEM TO BE SOLVED]To provide a rare earth magnet protected from reduction in the coercive force at high temperatures and a production method thereof.[MEANS TO SOLVE THE PROBLEM]A rare earth magnet comprising a main phase and a grain boundary phase present around the main phase, wherein: the overall composition is represented by the formula: (Nd(Ce, La)Ry)Fe)CoBMs·(RRM), wherein Ris one or more members selected from rare earth elements other than N, Ce and La, Ris one or more members selected from Pr, Nd, Pm, Sm, Eu and Gd, Ris one or more members selected from rare earth elements other than R, Mand Mare a predetermined element, 5.0≤p≤20.0, 0≤q≤8.0, 4.0≤r≤6.5, 0≤s≤2.0, 0≤t≤10.0, 0.4≤x≤0.8, 0≤y≤0.1, 0.5≤z≤0.8, and 0≤w≤0.1 and La is contained in an amount of 1/9 to 3 times by molar ratio relative to Ce.
Bibliography:Application Number: EP20180215888