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Known as “magnetic king”, Sintered NdFeB is the third generation rare earth permanent magnet material and the strongest permanent magnet material in the world with excellent magnetic properties widely used in automotive industry…
Sintered NdFeB (neodymium iron boron) is the third-generation rare-earth permanent magnet material, known as the “magnetic king,” and is currently the strongest permanent magnetic material in the world, with excellent magnetic properties. It is produced by mixing neodymium, iron, boron, and other trace elements into alloy powders, which are then ground into powder, molded under pressure, and sintered at high temperatures. Its main component is Nd₂Fe₁₄B. Due to its outstanding magnetic properties, sintered NdFeB is widely used in various applications requiring high-intensity magnetic fields, such as motors and generators, magnetic levitation technology, magnetic separation equipment, nuclear magnetic resonance imaging (MRI) in medical devices, and consumer electronics such as headphones and hard disk drives, etc.
High magnetic performance: Sintered NdFeB magnets have extremely high magnetic energy product (BHmax), typically ranging from 40 to 50 MGOe, with a maximum of up to 60 MGOe, which is more than ten times higher than traditional ferrite magnets.
High coercivity: They possess high coercivity, able to resist the demagnetizing effects of strong magnetic fields.
Temperature stability: The maximum operating temperature for high-performance products can reach 200°C, but it is generally recommended to use them in environments below 150°C to ensure magnetic stability.
Machinability: Despite being relatively hard and brittle, sintered NdFeB can be processed into various shapes through cutting, drilling, and other machining methods to meet different application requirements.
However, sintered NdFeB is susceptible to corrosion from moisture and oxygen in the environment, so surface coating treatment is usually required to prevent oxidation and corrosion. Common coatings include zinc plating, nickel plating, nickel-copper-nickel plating, epoxy resin, etc.
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