| 摘要 |
PURPOSE:To obtain an anisotropic magnet whose shockproofness and distortion- resistance are excellent by a method wherein thin pieces or powder of an alloy composed of a rare-earth element, iron an boron are sealed hermetically into a metal container and the thin pieces or powder of said alloy are warm-deformed together with said metal container in the radial direction and in the inner direction with reference to the long axis of said metal container so that the density and the degree of orientation can be enhanced. CONSTITUTION:An alloy composed of a rare-earth element, iron and boron is melted to obtain a desired composition; it is then solidified in the form of an ingot, a ribbon, a thin belt, thin pieces, powder or the like; in the case of the ingot and the thin belt, this material is broken into pieces of a suitable size. After the powder or pieces have been filled in a metal container, the powder, pieces or the like are warm-deformed, together with said metal container, in the radial direction and in the inner direction with reference to the long axis of the metal container. The pieces, powder or the like filled in the metal container are deformed together with the metal container in the radial direction and in the inner direction with reference to the long axis of the metal container; they are made to be highly dense; the easy-to-magnetize direction becomes equal to the direction; the socalled anisotropy is obtained. The temperature for warm-working is preferably 600-1000 deg.C. |
