history of development

Neodymium iron boron, also known as neodymium iron boron magnet, is formed by neodymium, iron, boron tetragonal crystal system.The neodymium magnet was discovered in 1982 by a real person named sagawa of Japan's sumitomo special metal.The magnetic energy of this magnet was greater than that of a samarium cobalt magnet, the largest in the world at that time.Later, sumitomo special metals developed successful powder metallurgy.General motors has successfully developed a spinning jet smelting process capable of producing ndfeb magnets.This magnet is the most powerful permanent magnet and the most commonly used rare earth magnet.