CPC H01F 1/0577 (2013.01) [B22F 3/24 (2013.01); C22C 33/02 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); H01F 41/0266 (2013.01); B22F 9/04 (2013.01); B22F 2003/248 (2013.01); B22F 2009/044 (2013.01); B22F 2202/05 (2013.01); B22F 2301/355 (2013.01); B22F 2998/10 (2013.01); C22C 2202/02 (2013.01)] | 11 Claims |
1. A neodymium-iron-boron permanent magnet, having a composition represented by formula I:
[mHR(1−m)(Pr25Nd75)]x(Fe100-a-b-c-dMaGabIncSnd)100-x-yBy formula I;
where a is 0.995-3.493, b is 0.114-0.375, c is 0.028-0.125, d is 0.022-0.100; x is 29.05-30.94, y is 0.866-1.000; m is 0.02-0.05;
HR is Dy and/or Tb; and
M is at least one selected from the group consisting of Co, Cu, Ti, Al, Nb, Zr, Ni, W and Mo.
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