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What are the main factors that can affect magnetic properties?
Addtime: 2023-06-10
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What are the main factors that can affect magnetic properties? Next, follow the jiangmen xuhong magnetic material manufacturers together to understand the rare


First, the environmental temperature. Because sintered NdFeB has a negative temperature coefficient (αBr<-0.13%/°C,αHcj<-0.6%/°C), so the use of the environment of the instantaneous high temperature and sustained high temperature will produce different degrees of demagnetization of the magnet itself, including reversible and irreversible, recoverable and non-recoverable.


Second, environmental humidity. NdFeB itself is easy to corrode and oxidize, generally we take the surface treatment to protect the permanent magnet, but it can not fundamentally solve the effect of environmental humidity on the magnet. The drier the environment is, the longer the service life of the magnet will be.


How to measure the Magnetic There are three main parameters: Residual magnetism Br (Residual Induction), unit Gauss, is a measure of the magnet can provide the strength of the external magnetic field parameter; Coercivity Hc (Coercive Force), unit Oersteds, is a measure of demagnetization ability of the parameter; Magnetic energy product BHmax, unit Gauss-Oersteds, is a characterization of how much energy can be stored. BHmax, unit Gauss-Oersteds, is a physical quantity that characterizes how much energy can be stored.


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