The performance of rare earth NdFeB is a powerful per […]
The performance of rare earth NdFeB is a powerful permanent magnet in contemporary magnets. Its BHmax value is 5-12 times that of ferrite magnets and 3-10 times that of AlNiCo magnets. Its coercivity is 5-10 times that of ferrite magnets and 5-15 times that of AlNiCo magnets. Rare earth neodymium iron boron has extremely high performance and can absorb heavy objects equivalent of 640 times its weight.
Because the main raw material iron in the neodymium disc magnet is very cheap, the reserve of rare earth neodymium is 10-16 times that of samarium, so its price is much lower than that of samarium cobalt magnet.
The performance of rare earth neodymium iron boron is better than samarium-cobalt magnets and alnico magnets, and it is easier to cut, drill, and process complex shapes.
The disadvantage of neodymium disc magnet is poor temperature performance, high magnetic loss when used at high temperature, and low maximum operating temperature. Generally around 80 degrees Celsius
On the right, the maximum working temperature of a specially treated magnet can reach 200 degrees Celsius. Because the material contains a lot of neodymium and iron, corrosion is also a major weakness. Therefore, a neodymium disc magnet must be treated with a surface coating. Nickel, zinc, and epoxy can be electroplated.
The neodymium disc magnet is widely used in industrial aerospace, electronics, electromechanical, instrumentation, medical and other fields. And it is widely used in non-technical fields, such as adsorption magnets, toys, jewelry, etc.