Friends who have some knowledge of magnets know that neodymium iron boron magnets are currently recognized as high-performance and cost-effective magnet products in the magnetic material industry. Many high-tech fields have designated the use of them to make various types of spare parts, such as national defense and military, electronic technology, medical equipment, motor and electrical appliances, and other fields. The more you use, the easier it is to identify problems, among which the demagnetization phenomenon of neodymium iron boron strong magnets is the most concerned in high-temperature environments.
Firstly, we need to know why neodymium iron boron demagnetizes in high-temperature environments?
The reason why neodymium iron boron undergoes demagnetization in high-temperature environments is determined by its physical structure. The reason why a general magnet can generate a magnetic field is because the electrons carried by the material itself rotate around the atoms in a certain direction, generating a certain magnetic field force, which in turn affects related affairs around it. However, there are certain temperature restrictions on the rotation of electrons around atoms in a given direction, and different magnetic materials can withstand different temperatures. In cases of excessive high temperature, electrons will deviate from their original orbits, causing chaos. At this time, the local magnetic field of the magnetic material will be disrupted, leading to demagnetization.
The temperature resistance of neodymium iron boron magnets is about 200 degrees Celsius, which means demagnetization will occur if the temperature exceeds 200 degrees Celsius. If the temperature is higher, demagnetization will be more severe.
The most effective solution for high-temperature demagnetization of neodymium iron boron magnets
1, Do not place neodymium iron boron magnet products at excessively high temperatures, especially pay attention to their critical temperature, which is 200 degree . Adjusting the working environment temperature in a timely manner can minimize demagnetization phenomena.
2, Starting from technology, we aim to improve the performance of products using neodymium iron boron magnets, enabling them to have a more temperature sensitive structure and less susceptible to environmental influences.
3, You can also choose high Coercivity materials with the same magnetic energy product. If not, you have to sacrifice a little magnetic energy product to find a higher Coercivity material with a lower magnetic energy product. If not, you can choose to use samarium cobalt. As for reversible demagnetization, you have to choose samarium cobalt.
The most effective solution for high-temperature demagnetization of neodymium iron boron strong magnets
Jul 25, 2023
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