Neodymium iron boron strong magnet is made of three elements, Nd, Fe and B.
- Core Features
Strong magnetism
The magnetic performance is 10-15 times than the ferrite. It means that the attraction of the NdFeB magnet is more powerful that the ferrite.
Low weight, high density
The density of the NdFeB magnet is 7.4-7.8g/cm3. The weight is more that the ferrite. However the magnetic performance is better. You can use smaller size of the NdFeB magnet to get the same magnetic performance compared with the ferrite.
Competitive price
Because of the mature manufacturing technique and large scale production, the price of sinter NdFeB magnet is lower compared with other rare earth elements.
Fragile
The vickers hardness of NdFeB is 550-650Hv, the material is hard and crispy. It is easy to break.
- The classification of the NdFeB magnet
Sinter
It is mostly widely used model. It use powder metallurgy technology to make powder and pressed into different shapes. Then sintering in vacuum environment.
Bond
It is blend the powder and adhesive to pressure forming.
Hot press
It use hot press technology, but not widely used.
