The disc manget is one regular and popular shape of sintered neodymium magnet.
The neodymium disc magnet is mainly used in holding equipment. Some small disc magnets with lower energy are also used in auto speakers.
Mostly of rare earth permanent magnet always work do not at room temperature or under vacuum, in order to keep the accuracy of shape size and avoid the Corrosion and oxidation, we must make the coating on the surface.
The main physical properties of sintered NdFeB
magnetic properties | Parameters |
Density /g.cm3 VickersHardness HV Resistivity /υΩ.cm Compressivestrength/N.mm-2 Coefficient of ThermalExpansion (C⊥)/K-1 Coefficient of ThermalExpansion (C∥) /K-1 | 7.45 570 150 780 -4.8X10-6 -3.4X10-6 |
