The main raw materials of sintered NdFeB permanent magnets

NdFeB sintered magnet main raw materials are rare earth neodymium (Nd) 32%, metallic iron (Fe) 64% of non-metallic elements and boron (B) 1% (a small amount, terbium (Tb), dysprosium (Dy) cobalt (co) , niobium (Nb), gallium (Ga), aluminum (Al), copper (Cu) and other elements). Ternary compound NdFeB permanent magnet materials based on Nd2Fe14B phase as a substrate, the composition should be a compound Nd2Fe14B similar formula.

There are three main parameters: remanence Br (residual magnetic flux density), in gauss, is removed from the saturation magnetic field, the strength of the external magnetic field representative of the residual magnetic flux density can be provided, the coercive force Hc of (coercive force), the Austrian unit Manchester is applied to the magnetic field in the reverse direction, when the external magnetic field is increased to a certain strength of the magnet will disappear, and the ability to drag the applied magnetic field is called coercive force indicates that the measured resistance to demagnetization magnetic products BHmax, gauss - oersteds, magnetic field energy per unit volume of material is produced, it may be stored magnetic energy of the physical quantity.

The third generation of rare earth permanent magnet NdFeB NdFeB (NdFeB) magnets are the strongest performance of contemporary permanent magnet. Because of its high remanence, high coercivity, high energy product, known as the contemporary "magnetic."

Because our rich rare earth mineral resources and changing production processes and the development of innovation and technology, not only so that it has a high cost performance, are particularly easily formed into various sizes and shapes, such as: rings, tile, triangle, rectangular, etc..

In recent years, NdFeB, NdFeB thermal stability and corrosion resistance has been able to improve the working temperature above 200 degrees, plus a nickel - copper - nickel, double nickel, bright nickel, black nickel, nickel zinc white, blue zinc, color zinc, black zinc, chromium, zinc phosphate, electrophoresis epoxy, parylene, etc., and comply with environmental requirements. More widely used in various electrical products, rare earth permanent magnet motor car has become the trend of contemporary development.