| 摘要 |
PURPOSE:To improve density without deteriorating magnetic characteristics, and obtain superior magnetic characteristics, by binding magnetic powder obtained by pulverizing bulk type alloy whose basic composition is composed of specified elements, and spherical type magnetic powder having the similar composition, by using resin. CONSTITUTION:Basic composition of bulk type alloy is the following; rare earth metals (at least one kind of rare earth element containing Y), cobalt Co, to which iron Fe, copper Cu, zirconium Zr, etc., are added in the case of need, and inevitable impurities of manufacturing. Magnetic powder obtained by pulverizing said alloy and spherical type magnetic powder having the similar composition are bound by using resin. The bulk type alloy is casted alloy or sintered magnet which is heat-treated and cured in a magnetic field. The spherical magnetic powder is obtained by using a quenching solidification method such as a gas atomization method, a rotary electrode method, and a centrifugal atomization method. |
