Abstract: The invention relates to a component of rare earth permanent magnet material, and the atomic percents of the material are Re(x)Fe(100x-z-a-b-c)B(z)Nb(a)Al(b)M(c), wherein x=12-16, z=5.5-6.5, a=0.05-1, b=0-0.8, and c=0-3. Re stands for rare earth elements, which comprises one or more of Nd, Pr, Gd, Ho, Dy and Tb. By adding Nb, Hcj can be improved, the rectangle degree of J-H demagnetization curve can be improved, and the temperature stability of the product can also be improved; and by adding Nb, the amount of Dy and Tb in heavy rare earth can be reduced, and the cost of the material can also be reduced.

Abstract: The invention relates to a method of manufacturing high-performance neodymium iron boron permanent magnet material, which improves the coercive force of a magnet by replacing Dy with heavy rare earth element Tb, and simultaneously reduces the production cost by replacing Nd with a small amount of Pr. The neodymium iron boron permanent magnet material containing Pr and Tb comprises (Nd,Pr)x, Feresidual, By, Dyz, Tbu, Coy, and Alw; the atomic percents of the elements are respectively 7?x?15, 5.5?y?8, 0.05?z?6, 0?u?2, 0?v?3, 0?w?1.5 and Fe and inducted impurity from raw material for the residual. The compounding, smelting, dusting, moulding and sintering processes are performed according to the atomic percents. The added Tb improves the anisotropy field of the molecule of the magnet, therefore, the coercive force of the magnet is obviously improved.