The Knowledge of neodymium magnet

Neodymium Iron Boron, NdFeB, magnets are the strongest magnets available.

Like Samarium Cobalt, NdFeB is termed a Rare Earth magnet. The Neodymium Iron Boron, NdFeB, magnets are made of an alloy primarily consisting of Neodymium, Iron and Boron and the alloy is chemically written as Nd2Fe14B. Although Neodymium Iron Boron is often written as NdFeB or Neodymium, it is often given the nickname of “Neo” and, very infrequently, “NIB”.

If the user understands the limitations of NdFeB and understands their application, the use of NdFeB magnets can allow very compact designs with high performance with issues affecting the performance. For note, if the magnet is kept in dry conditions at all times and the plating is not broken and no external demagnetising fields are applied to it, the magnet theoretically can retain its magnetism indefinitely.

The max operation of neodymium magnet

NdFeB magnet have different grade from N35-N52.The higher grade,the stronger magnetic force.ALso the max working temperature from 80 to 230 degree,from N to UH.Different grade with different working temperature.N-80C,M-100C,H-120C,SH-150,UH-180,EH-200,AH-230

The coating of NdFeB magnet

All the Neodymium Iron Boron, NdFeB, magnets are prone to corrosion (a method similar to rusting). Usually haveZn,Ni,NiCuNi,Epoxy,Chrome,Gold,Silver and so on.

The application of magnets

Noeydmium magnet widely use in the different industry,such as Sensors,Magnet Motor,Wind Turbines Magnet,Wind Generators,Permanent magnet generator,Permanent neodymium magnets,Loudspeakers,Magnetic hooks,magnetic holder, lifting magnet,ladies bags,purse,magnetic generator Iphone and Ipad leather,magnet for crafts,jewelry,neodymium magnet for disk,leather magnet and so on.

The parameter of neodymium magnets

    1. Br(Residual magnetism): means that remains on magnetic storage media after degaussing . Magnetic induction intensity unit was named Tesla(T).1T=10000Gs

    2. Hcb(Coercive force) : When the reverse magnetization of the magnet, the magnetic flux density to zero reverse magnetic field strength values required. Hcj(Intrinsic Coercive force):The required reverse magnetic field strength when the magnetization of the magnet to zero.

    3. (BH)max: Maximum magnetic energy product, the value is multiplied by the maximum value of Br and Hcb. The unit is MGOe .

    4. The working temperature means that the temperature should not exceed normal value, otherwise magnet will demagnetization and unavailable to use.

AIM Magnet Knowledge