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The King of Magnets: Neodymium Magnets
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The King of Magnets: Neodymium Magnets

NdFeB material, as one of the most important application fields of rare earth materials, is one of the important basic materials supporting the modern electronic information industry and is closely related to people's life. With the popularization of communication equipment such as computers, mobile phones and car phones and the rapid development of energy-saving cars, the demand for high-performance rare earth permanent magnet materials is growing rapidly across the world. Neodymium magnets are the most commercialized magnets found at present and are called the king of magnets by people.

As for the manufacture of neodymium magnets, as many reports have said, it is impossible to leave China. This is because most Dy (dysprosium) mixed in the magnet is mined from China, but China has already begun to restrict its exports. Neodymium magnets are the magnets with the highest commercialized performance at present. They can be said to be the " king of magnets " in the magnet field. With extremely high magnetic performance, its maximum magnetic energy product (BHmax) is more than 10 times higher than that of permanent magnet ferrite.

Neodymium magnets have good machining performance: the working temperature can reach up to 200 degrees Celsius. Moreover, they are widely used thanks to their hard texture, stable performance and good cost performance. Due to their strong chemical activity, the surface coating must be treated (e.g. Zn and Ni plating, electrophoresis, passivation, etc.).

After using this kind of magnet, when talking about magnets, people will not say that "magnets are substances that adsorb iron, cobalt and nickel". However, it will be associated with the idea "all substances have magnetic induction", and only iron, cobalt and nickel have stronger magnetism and more obvious phenomenon of magnetic induction. Magnetic induction of other substances cannot be noticed without strong magnets.
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