High-temperature-resistant high-performance rare earth permanent magnet material

[0024] A high-temperature resistant high-performance rare earth permanent magnet material, including rare earth elements, iron, boron, molybdenum, silicon, vanadium, calcium, zirconium, chromium, nickel, the weight percentage of each component is: boron 1.0%, molybdenum 0.1%, silicon 3%, vanadium 1.5%, calcium 0.3%, zirconium 0.1%, chromium 0.2%, nickel 3%, neodymium 20%, holmium 0.5%, dysprosium 2%, praseodymium 1.5%, the balance is iron and unavoidable impurities;

[0025] Specific steps include:

[0026] (1) Raw material preparation: mix the surface-cleared raw materials according to the weight ratio;

[0027] (2) Ingot casting: Put the raw materials into the melting furnace, vacuumize, melt and cast into ingots under the protection of 0.05MPa argon, and then place the ingots in a vacuum furnace for homogenization treatment. The temperature of the treatment is 950°C for 9 hours;

[0028] (3) Powder making: hydrogen crushing the homogenized ingot to 200μm alloy powder, and th

[0034] A high-temperature resistant high-performance rare earth permanent magnet material, including rare earth elements, iron, boron, molybdenum, silicon, vanadium, calcium, zirconium, chromium, nickel, the weight percentage of each component is: boron 1.2%, molybdenum 0.14%, silicon 2%, vanadium 2%, calcium 0.15%, zirconium 0.3%, chromium 0.4%, nickel 2%, neodymium 24%, holmium 0.6%, dysprosium 2.4%, praseodymium 1.8%, the balance is iron and unavoidable impurities;

[0035] Specific steps include:

[0036] (1) Raw material preparation: mix the surface-cleared raw materials according to the weight ratio;

[0037] (2) Ingot casting: Put the raw materials into the melting furnace, vacuumize, melt and cast into ingots under the protection of 0.05MPa argon, and then place the ingots in a vacuum furnace for homogenization treatment. The temperature of the treatment is 900°C for 10 hours;

[0038] (3) Milling: Hydrogen crushing of the homogenized ingot to 230μm alloy powder, follow

[0044] A high-temperature resistant high-performance rare earth permanent magnet material, including rare earth elements, iron, boron, molybdenum, silicon, vanadium, calcium, zirconium, chromium, nickel, the weight percentage of each component is: boron 1.4%, molybdenum 0.06%, silicon 1%, vanadium 2.5%, calcium 0.45%, zirconium 0.4%, chromium 0.1%, nickel 4.5%, neodymium 28%, holmium 0.7%, dysprosium 2.8%, praseodymium 2.1%, the balance is iron and unavoidable impurities;

[0045] Specific steps include:

[0046] (1) Raw material preparation: mix the surface-cleared raw materials according to the weight ratio;

[0047] (2) Ingot casting: Put the raw materials into the melting furnace, vacuumize, melt and cast into ingots under the protection of 0.05MPa argon, and then place the ingots in a vacuum furnace for homogenization treatment. The temperature of the treatment is 960°C for 9 hours;

[0048] (3) Powder making: hydrogen crushing the homogenized ingot to 250μm alloy powder, an