Permanent magnet material of high coercive force Pr-Co alloy and permanent magnet material of thin film and method of manufacturing the same

摘要

The present invention relates to a permanent magnet material of an alloy and a thin film consisting essentially of Pr and Co and inevitable impurities, and further consisting at least one element selected from the group consisting of B, C, Fe, Cu, W, Ti, Ce and Sm as a secondary component and a method of manufacturing the permanent magnet comprising compacting or injection molding, then heating and sintering, and an object of the invention is to provide a small-sized and strong permanent magnet material having extremely large coercive force.;A permanent magnet material of a high coercive force Pr-Co alloy having coercive force of more than 80 kA/m, which alloy consists essentially of 15-30 at% of Pr, the remainder Co and inevitable impurities and as a secondary component at least one element selected from the group consisting of 0.1-8 at% of B, C, Fe, Cu and W and 0.1-5 at% of Ti, Ce and Sm, and a method of manufacturing the same, and a Pr-Co thin film magnet material and a method of manufacturing the same.;The present invention is to provide a method of manufacturing a permanent magnet having a high coercive force and consisting of the same component which comprises compacting or injection molding of same alloy powder, and then heating and sintering, so as to provide a small-sized and strong permanent magnet material having extremely high coercive force.