Magnetic antisotropic bonded magnet

2022-07-31 1840 139K 0
PROBLEM TO BE SOLVED : To provide a magnetically anisotropic bonded magnet constituted of rare earth magnet powder having high anisotropy which is subjected to high-temperature hydrogen heat treatment and thermosetting resin. SOLUTION : A rare earth element (to be referred to as R in the following) is subjected to high temperature hydrogen heat treatment, has anisotropy (Br/Bs where Bs is 1.6 T (16 kG))of at least 0.70, and contains yttrium (Y). RFeB alloy consists of R, boron (B), inevitable impurities, and iron (Fe) as the residue. The rare earth magnet powder consists of RFe(Ga+Nb)B alloy, which contains RFeB alloy, gallium(Ga) and niobium(Nb). The magnetically anisotropic bonded magnet consists of the rare earth magnet powder and thermosetting resin and has a maximum energy product of at least 135 kJ/m3 can be obtained.


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