HIGH-PERFORMANCE NEODYMIUM IRON BORON PERMANENT MAGNET MATERIAL AND PREPARATION METHOD THEREFOR

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A neodymium iron boron permanent magnet material and a preparation method therefor. The neodymium iron boron permanent magnet material is prepared by an anisotropic magnet as shown in formula (Nd, Pr)x Fe(100-x-y-z)ByMz and heavy rare earth as shown in formula TbaFebAl100-a-b, and the mass ratio of the heavy rare earth to the total amount of the anisotropic magnet and the heavy rare earth is 0.1-5 wt%. On the basis of reducing the use amount of heavy rare earth elements, the neodymium iron boron permanent magnet material can ensure that the coercive force of a neodymium iron boron magnet is obviously improved while the residual magnetism of the neodymium iron boron magnet is not reduced or slightly reduced, thus greatly reducing production costs.