Sintered NdFeB magnet, Ferrite magnet, SmCo magnet
Sintered NdFeB magnet
Nd-Fe-B permanent magnet material, discovered in 1983 as the third generation of rare- earth permanent magnet, is the strongest magnet in the world.
Mainly made from rare earth Neodymium-Iron-Boron.
With high residual magnetism, high coercive force and high magnetic energy product.
Can be coated by white Zinc, color Zinc, Nickel, Nickel-Cu-Nickel, Gold, Passivated, and Epoxy.
Those coatings can protect the magnet and against oxidization.
There are two types : One is isotropic magnet and the other is anisotropic magnet.(anisotropic magnet included the dry compression and wet compression).
The property included the corruptive is very high, not easy to demagnetize. The normal tolerance is +/-2%, after process, the tolerance can be +/-0.05%.