| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide ferrite magnetic powder for a bonded magnet which can be improved in fluidity, without increasing the content of a binder, and to provide its manufacturing method, and the bonded magnet which contains the ferrite magnetic powder for the bonded magnet. <P>SOLUTION: Raw material powder of the ferrite magnetic powder for the bond magnet is baked and pulverized to an average particle size of ≤2.5 μm and a specific surface area of ≥1.25 m<SP>2</SP>/g, and then is annealed and is further compressed. The baked powder, having been compressed, has an average particle size Ra (μm) of <2.5 μm measured by dry air dispersion laser diffraction method, and a difference Ra-Da of <0.5 μm, where Da (μm) is the specific surface area diameter. <P>COPYRIGHT: (C)2007,JPO&INPIT |
