Sintered Neodymium iron boron permanent magnet(NdFeB), in short, it's a kind of magnet. It's different from the magnets we usually see, as its excellent magnetic properties, it is known as the "magnetic king". Neodymium iron boron contains a large number of rare earth elements Nd, Fe and B, its characteristics are hard and brittle. As a kind of magnetic, NdFeB rare earth permanent magnet materials has high coercive force and magnetic energy product, at the same time, the advantages of high energy density, the NdFeB permanent magnetic materials have been widely used in modern industry and electronic technology. Thus, it is possible to miniaturize, lightweight and thin instruments, electro motors, magnetic separation and magnetization device. The advantages of NdFeB is cost-effective, with good mechanical properties, shortcomings is low working temperature, poor temperature characteristics, and easy powder corrosion, It must be improved by adjusting its chemical composition and adopting surface treatment, in order to meet the requirement of practical application. 

Surface treatment of neodymium iron boron:

Because the surface of sintered Nd-Fe-B is easily oxidized and corroded, the surface coating treatment must be carried out. General have galvanized, nickel, zinc, nickel, environment-friendly nickel copper nickel, nickel copper nickel and other environmental protection. 

Magnetization:

Magnetization of sintered NdFeB is generally divided into axial magnetization and radial magnetization, which is determined by required working face.

Application:

Sintered NdFeB permanent magnetic material has excellent magnetic properties, widely used in electronics, electrical machinery, medical equipment, toys, packaging, hardware machinery, aerospace and other fields. The most common are permanent magnet motors, speakers, computer disk drives, magnetic separator, magnetic resonance imaging instrument etc..

Curie temperature:

Neodymium iron boron Curie temperature :  320 ℃ -460 ℃.