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 a permanent magnet with magnetic properties second only to 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 collective term for powerful magnets, which is a type of artificial permanent magnet. It is currently the strongest permanent magnet and the most cost-effective magnet, and is known as the magnetic king in the magnetic field. It is expected that there will be no alternative magnetic materials to neodymium iron boron magnets in the next 20 years.

Neodymium iron boron has extremely high magnetic energy product and coercive force, 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, electro-acoustic motors, magnetic separation and magnetization. The advantages of neodymium iron boron are high cost-effectiveness and good mechanical properties; The disadvantage lies in the low Curie temperature point, poor temperature characteristics, and easy pulverization corrosion. It must be improved by adjusting its chemical composition and adopting surface treatment methods to meet a practical application requirement.

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 multipole magnetization, spiral magnetization, etc. of the ring.

Neodymium iron boron magnets are by far the most powerful permanent magnets. The material grade is N35-N52; Various shapes can be processed according to specific requirements: circular, square, perforated, magnetic tile, magnetic rod, convex, trapezoidal, etc; The applicable ambient temperature for ordinary neodymium iron boron magnets is below 80 degrees Celsius, but there are also several types that can withstand high temperatures of 200 degrees Celsius. These outstanding features make it the 'Magnet King'.