The reason why NdFeB is degaussing in high temperature environment is determined by its own physical structure. The reason why magnets can produce a magnetic field is that the electrons carry the electrons around the atom in a certain direction and generate a certain magnetic field force, which will affect the surrounding related affairs.
However, the rotation of electrons around an atom in a given direction is limited by certain temperature conditions. The temperature that different magnetic materials can withstand is also different. Under too high temperatures, electrons will deviate from their original orbit and cause chaos. When the magnetic field local magnetic field will be disrupted, resulting in demagnetization. The resistance temperature of NdFeB is about two hundred degrees, that is, if more than two hundred degrees of Baidu, demagnetization will occur. If the temperature is higher, the demagnetization phenomenon is more serious.
First, do not put the neodymium-iron-boron magnet product into high temperature, especially pay attention to its critical temperature, that is, two Baidu, timely adjust its working environment temperature, you can minimize the occurrence of demagnetization.
Second, it is to start with technology, improve the performance of products using magnets, so that it can have a more temperature structure, not easily affected by the environment.
Third, it is also possible to select high coercivity materials with the same energy product. If it is not enough to sacrifice a little magnetic energy product and find a higher coercivity material with a lower magnetic energy product, then you can choose to use SmCo. For reversible demagnetization, only SmCo is selected.
Therefore, each material has different characteristics. So choosing the most suitable and most economical talent will bring greater benefits.