NdFeB magnets are tetragonal crystals formed by neodymium, iron and boron. The magnetic energy product of this magnet is greater than the samarium cobalt magnet, which is the largest magnetic energy product of the material at that time. This magnet is today's magnetic second only to the absolute zero holmium magnet permanent magnet, is also the most commonly used rare earth magnet. NdFeB magnets are widely used in electronic products, such as hard drives, mobile phones, headphones and battery-powered tools.
In order to avoid corrosion damage, it is necessary to do protection treatment on the surface of permanent magnet materials, such as electroplating with gold, nickel, zinc, tin, and spraying epoxy resin on the surface.
NdFeB is divided into sintered NdFeB and bonded NdFeB. NdFeB is magnetic and corrosion-resistant in all directions. And sintered NdFeB because of easy corrosion, the surface needs coating, generally galvanized, nickel, environmentally friendly zinc, environmentally friendly nickel, nickel copper nickel, environmentally friendly nickel copper nickel and so on. The sintered NdFeB is generally divided into axial and radial magnetization, according to the required working face.
Sintered NdFeB permanent magnet material has excellent magnetic properties, widely used in electronics, electrical machinery, medical equipment, toys, packaging, hardware machinery, aerospace and other fields, the more common permanent magnet motor, loudspeakers, magnetic separator, computer disk drive, magnetic resonance imaging equipment and meters.
