Neodymium magnet is a tetragonal crystal formed by neodymium, iron and boron (Nd2Fe14B). In 1982, Masayoshi Sagawa of Sumitomo Special Metals discovered neodymium magnets. The magnetic energy product (BHmax) of this kind of magnet is greater than that of the samarium cobalt magnet, and it was the material with the largest magnetic energy product in the world at that time. Later, Sumitomo Special Metals successfully developed the powder metallurgy process, and General Motors successfully developed the melt-spinning process, which can prepare NdFeB magnets. This kind of magnet is a permanent magnet whose magnetism is second only to that of an absolute zero degree holmium magnet, and it is also the most commonly used rare earth magnet. NdFeB magnets are widely used in electronic products, such as hard drives, mobile phones, earphones, and battery-powered tools.

In order to avoid corrosion damage, it is necessary to do a protective treatment on the surface of the permanent magnet material during use, such as electroplating with gold, nickel, zinc, tin, and spraying epoxy resin on the surface.

Sintered NdFeB permanent magnet materials have excellent magnetic properties and are widely used in electronics, electrical machinery, medical equipment, toys, packaging, hardware machinery, aerospace and other fields. The more common ones are permanent magnet motors, speakers, magnetic separators, Computer disk drives, magnetic resonance imaging equipment meters, etc.

Nano (Royce3010) chelating film non-plating treatment can be used in marine climate conditions for 20-30 years, and can be widely used in sea-based wind power generation. The surface adhesion force is more than 20Mpa, and it can be widely used in permanent magnet high-speed motors, special motors, and electric car motors. , UHV, HV DC power supply system, fast charging system, aerospace and military industry.