Sintered magnet

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PROBLEM TO BE SOLVED : To provide a sintered magnet that satisfies reduction of rare earth elements that are rare resources and increase of coercive force and a maximum energy product. SOLUTION : An Fe-based powder of high saturation magnetic flux density is mixed with a NdFeB-based magnetic powder. The Fe-based powder has shape anisotropy and a surface of which is coated with a fluoride containing heavy rare earth element by a solution treatment. An average particle diameter of the Fe-based powder is larger than an average particle diameter of the NdFeB-based magnetic powder. COPYRIGHT : (C)2015, JPO&INPIT