| Abstract: | The
effect of particle size and distribution of rapidly quenching NdFeB magnetic powder on the
magnetic properties of polymerbonded NdFeB permanent magnet was studied. The results
show that the particle size and the distribution of rapidly quenching NdFeB magnetic powder
have significant effects on the magnetic properties of polymerbonded NdFeB permanent
magnet. As long as the size and the distribution of rapidly quenching NdFeB powder are within
the right range, high magnetic properties of polymerbonded NdFeB permanent magnet can be
obtained. This is mainly because the rapidly quenching NdFeB magnetic powder has high
hardness and is scaleshaped. The larger the size of rapidly quenching NdFeB particles is, the
more difficult it is to obtain high density of bonded NdFeB magnet. However the structure will be
destroyed if the size is too small. It results in the deterioration of magnetic properties. The
mechanism is also discussed. |
