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What is Ndfeb magnet?

August 11,2023

Ndfeb magnet is the most common strong magnetic material on the market. This magnet has won recognition from many consumers and industries for its strong magnetism and wide range of applications.


Neodymium magnet is made of rare earth element neodymium, transition metal iron and non-metallic element boron through a certain process.

It was developed almost simultaneously in 1982 by General Motors of the United States and Sumitomo Special Metals of Japan.

Since their discovery, neodymium magnets have rapidly replaced other types of magnets in a variety of applications due to their superior properties.


First of all, the magnetic energy products and coercivity of neodymium magnets are very high, much more than other types of magnets. This means that a neodymium magnet of the same size can generate a stronger magnetic field than other magnets. Therefore, neodymium magnets are widely used in places where powerful magnetic forces are required, such as motors, generators, hard drives, MRI scanning equipment, etc.

Secondly, the operating temperature range of neodymium magnets is also quite wide. Although its maximum operating temperature is lower than that of thermally stable SmCo magnets, its cost is much lower than that of SmCo magnets. Therefore, in most cases, people are more inclined to choose neodymium magnets.

Although neodymium magnets have many advantages, there are also some disadvantages. For example, its resistance to corrosion and oxidation is weak, so it needs to be protected by some special surface treatment methods, such as gold plating, nickel plating, etc. In addition, although the maximum operating temperature of neodymium magnets can reach 150 ° C, its magnetism will gradually decline when the temperature exceeds 80 ° C.


Nevertheless, the advantages of neodymium magnets still make them widely used in a variety of applications. For example, in consumer electronics, neodymium magnets are often used to make headphones, speakers, etc. In industry, Neodymium magnets are widely used in motors and generators. In the medical field, neodymium magnets are used to make MRI devices. These applications of neodymium magnets all show their strong performance and broad application prospects.