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

摘要

Disclosed in the present invention are a neodymium-iron-boron magnet material, a raw material composition thereof, a preparation method therefor, and an application thereof. The raw material composition of the neodymium-iron-boron magnet material contains: a first component: a light rare earth element (LR), wherein the LR comprises: Nd; Ho: 0-10 mas%, not including 0 mas%; Cu: 0.35-0.6 mas%; C: 0-0.32 mas%; Ga: 0-0.42 mas%, not including 0 mas%; Co: 0-0.5 mas%; Al: 0-0.5 mas%; X: 0.05-0.5 mas%; B: 0.9-1.05 mas%; and the balance of Fe, and the first component does not comprise other heavy rare earth elements in addition to Ho; and a second component: Dy and/or Tb: 0.2-1 mas%. The neodymium-iron-boron magnet material in the present invention has good grain boundary continuity, high remanence, high coercivity, excellent high-temperature performance, and excellent corrosion resistance.