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What Are The Main Factors That Affect Magnetic Performance?
Oct 22, 2018

What are the main factors that affect magnetic performance?


Ambient temperature. Since sintered NdFeB has a negative temperature coefficient (αBr<-0.13%/°C, αHcj<-0.6%/°C), the instantaneous higher temperature and higher temperature of the use environment will cause different degrees of demagnetization of the magnet itself. , including reversible and irreversible, recoverable and unrecoverable.


environment humidity. NdFeB itself is easily corroded and oxidized. Generally, we take surface treatment to protect it.

Protect the permanent magnets, but it does not fundamentally address the effects of ambient humidity on the magnets. The dryer the environment, the magnet

The longer the service life is.


How to measure the level of magnetic performance?

There are three main parameters:


Br


Gauss is a parameter that measures the strength of the magnetic field provided by the magnet; the coercive force Hc (Coercive Force).


Oersteds is a measure of the ability to resist demagnetization; the magnetic energy product BHmax, in Gauss-Oersteds, is a physical quantity that characterizes how much energy can be stored.