| 摘要 |
PURPOSE: To provide a magnet without decomposing a magnet material by holding magnetic powder having composition to be decomposed at a sintering temperature, applying impact energy to the powder in the vessel, and impact compressing it. CONSTITUTION: Sm2 Fe17 Nx magnetic powder is loaded in a Cu capsule 9, and compacted by a hydraulic press to green compact 10. The capsule 9 is set to a holder 7. A vessel 5 is held in a predetermined vacuum degree and explosive powder 2 is exploded. A flying unit 1 is collided with the part of the capsule 9 embedded in the bottom part of the recess 12 of the holder 7 disposed in the vessel 5 through a launching tube 4 by the explosion energy of the case. The compact 10 is impact compressed by the impact energy of the case of the collision to obtain a bulk magnet. Thus, the magnet material which is decomposed by sintering it at a high temperature is formed to the magnet having high performance without decomposing the material. |
