| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and apparatus which simply measures variation in characteristics of a magnetic material with a small scale facility at low costs so as to discriminate a magnet having recessive characteristics of thermal demagnetization, even for ferromagnetic materials such as Nd-based materials having large coercive force. <P>SOLUTION: An apparatus for measuring magnetic characteristics of a ferromagnetic material is provided with a magnetic field generating mechanism, so that a magnetic flux 108 generated by the magnetic field generating mechanism is injected to a ferromagnetic material 105 to be measured. The apparatus includes magnetic poles 107 of the magnetic field generating mechanism which are arranged with a gap facing the ferromagnetic material 105 to be measured, a load transfer mechanism 102 which is linked to the ferromagnetic material to be measured, and a load sensor 101 which measures the force, transmitted through the load transfer mechanism, applied to the ferromagnetic material to be measured by the magnetic flux. The area of the tip of the magnetic pole 107 of the magnetic field generating mechanism is equal to or smaller than the area of the ferromagnetic material 105 to be measured. <P>COPYRIGHT: (C)2012,JPO&INPIT |
