Sumitomo Special Metals has successfully developed the powder metallurgy process, while General Motors has successfully developed the melt spraying process, which can prepare neodymium iron boron magnets. This type of magnet is currently the second most magnetic permanent magnet after absolute zero degree holmium magnets, and is also the most commonly used rare earth magnet. Neodymium iron boron magnets are widely used in electronic products, such as hard drives, mobile phones, headphones, and battery powered tools.

Neodymium iron boron magnet is a general term for strong magnets, which is a type of artificial permanent magnet. It is currently the most powerful permanent magnet and the most cost-effective magnet. It is known as the magnetic king in the magnetic field. It is expected that in the next 20 years, there will be no magnetic materials that can replace neodymium iron boron magnets

Neodymium iron boron has extremely high magnetic energy product and coercivity, and the advantages of high energy density have made neodymium iron boron permanent magnet materials widely used in modern industry and electronic technology, making it possible to miniaturize, lighten, and thin equipment such as instruments, electroacoustic motors, and magnetic separation magnetization. The advantages of neodymium iron boron are high cost-effectiveness and good mechanical properties; The shortcomings lie in the low Curie temperature point, poor temperature characteristics, and easy pulverization and corrosion. It must be improved by adjusting its chemical composition and adopting surface treatment methods to meet the requirements of practical applications.

Neodymium iron boron magnets are relatively corrosion-resistant, with a general coating of black epoxy and gray epoxy. The magnetization method is more flexible than sintered neodymium iron boron, and can be multipole magnetization on the outer diameter, inner diameter, radiation magnetization, end face multipole magnetization, spiral magnetization, etc.

Neodymium iron boron magnets are permanent magnets with the strongest magnetic force to date. Material grades include N35-N52; Various shapes can be processed according to specific requirements: circular, square, perforated, magnetic tile, magnetic rod, convex, trapezoidal, etc; The suitable ambient temperature for ordinary neodymium iron boron magnets is below 80 degrees, but there are also several that can withstand high temperatures of 200 degrees. These outstanding features make it the "magnetic king".