| 简介 |
PROBLEM TO BE SOLVED : To improve the mechanical strength of a ferrite sintered magnet, having high magnet characteristics. SOLUTION : The ferrite sintered magnet contains Fe an element A (at least one kind selected from among Sr, Ba, Ca, and Pb); an element R (at least one kind selected from among rare earth elements and Bi, and necessarily contains La), and an element M (Co/Co and Zn). Also, the ferrite sintered magnet has a hexagonal magnetoplumbite type ferrite for the main phase. In the manufacturing method of the ferrite sintered magnet, after molding a powder into a molded object, the process for sintering the molded powder is provided. Further, the powder to be molded object is formed substantially out of the magnet powder obtained by powdering the ferrite sintered magnet, or the powder to be molded object is formed sustantially out of this magnet powder and a raw-material powder containing Fe and the elements A, R, M. |
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