NEODYMIUM-IRON-BORON MAGNET MATERIAL, RAW MATERIAL COMPOSITION, AND PREPARATION METHOD AND APPLICATION OF NEODYMIUM-IRON-BORON MAGNET MATERIAL

摘要

A neodymium-iron-boron magnet material, a raw material composition, and a preparation method and application of the neodymium-iron-boron magnet material. The raw material composition of the neodymium-iron-boron magnet material comprises: a first component: LR comprising Nd, 0 to 10 mass percent but not equal to 0 of Ho, 0.12 to 0.45 mass percent of C, 0.12 to 0.6 mass percent of Cu, 0 to 0.42 mass percent but not equal to 0 of Ga, 0 to 0.5 mass percent of Co, 0 to 0.5 mass percent of Al, 0.05 to 0.45 mass percent of X, 0.9 to 1.05 mass percent of B, and the balance of Fe, wherein the first component does not comprise other heavy rare earth elements except Ho; and a second component: 0.2 to 1 mass percent of Dy and/or Tb. The neodymium-iron-boron magnet material is good in grain boundary continuity, high in residual magnetism, high in coercive force, good in high-temperature performance, and good in corrosion resistance.