Sintered NdFeB permanent magnetic materials at room temperature (20 ℃ ~ 25 ℃) under the magnetic performance table

- Nov 09, 2017 -

The main use of magnetic materials are ceramic ferrite magnets, Alnico, SmCo and neodymium iron boron. Samarium Cobalt and NdFeB are rare earth permanent magnet materials.

Currently the world's most widely used ferrite, the product is cheap, followed by neodymium iron boron; Alnico and samarium cobalt temperature stability than neodymium iron boron is good, so in some pointer instruments, military supplies and high-end consumer goods also AlNiCo and samarium cobalt materials.

The Curie temperature of the ferrite is 465 ° C., the Curie temperature of the NdFeB is 310 ° C., the Curie temperature of the AlNiCo is 800 ° C., and the Curie temperature of the Samarium Cobalt is between 700 and 800 ° C. Therefore, Iron boron temperature stability of the worst, but the highest performance, known as the "magnetic king", the current production of magnetic materials have two sintering and bonding process, the bonding due to magnetic properties of the adhesive will not be high, but the product High accuracy.

Article from NdFeB Industry Network

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