Brief Introduction to Neodymium Magnet Materials
The third generation of rare earth permanent magnet, Neodymium Iron Boron (Neodymium magnets), is the most powerful permanent magnet in modern magnets.
The highest Remanence (Br) of Neodymium magnet1 is 3.8 times that of ferrite magnet, 1.1 times of that of Aluminum Nickel cobalt magnet and 1.3 times of that of SmCo magnets.
The highest (BH)max value of Neodymium magnet is 14.8 times that of ferrite magnet, 6 times of that of Aluminum Nickel cobalt magnet and 1.7 times of that of SmCo magnets.
The highest intrinsic coercive force (Hci) of Neodymium magnets is 11 times that of a ferrite magnet , 17 times that of a nickel cobalt magnet and 1.4 times of that of SmCo magnets.
Nd-Fe-B rare earth permanent magnet (NdFeB) has high Remanence(Br), high coercive force (Hc) and high energy product (BH)max, high performance price ratio, easy to be processed. Devices utilizing Neodymium magnets have been widely used in aerospace, electronics, electro acoustic instruments, toys, medical technology and so on. A variety of products have been applied especially for high magnetic performance and miniaturization.
As the raw material of Neodymium magnet has high cost performance ratio, tremendous reserves of it, which is more than 10 times of that of Samarium Cobalt, so the price of Neodymium magnets is much lower than SmCo magnet. Compared with SmCo magnets and Alnico magnet, the mechanical properties of Neodymium magnets are good and so relatively easy for cutting, drilling and processing of complex shape. The disadvantage of Neodymium magnet is its poor temperature performance. High temperature could make Neodymium magnets a great loss in magnetic performance. Its maximum working temperature is low. 176°F (80 °C) is the highest the Neodymium magnet of N grade could work at, for example. With special process and added elements, Neodymium magnets of grade AH can work at up to 428°F (220 °C). As the materials of Neodymium magnets contain a lot of neodymium and iron, it is easy to corrosion which is the major weakness. Consequently, Neodymium magnets must be treated with surface coating with Nickel plated (Ni), zinc (Zn), gold (Au), chromium (Cr), epoxy resin (Epoxy), etc. Neodymium magnets are widely used in industry, aviation, aerospace, electronics, mechanical and electrical, instrumentation, medical and other fields.
N45 OD 4″xID 2″x1/2″ Sintered NdFeB Rare Earth Anisotropic Ring Magnet, Servomotor Electrical Motor NdFeB Radiation Oriented Annular Magnet, Sintered NdFeB Multi-pole Radiation Magnetic Ring Supplier N45 Sintered NdFeB Rare Earth Anisotropic Ring Magnet Parameter: Material: Sintered NdFeB. Grade N45 Size: OD 4″xID 2″x1/2″ Gauss Rating: 13,500 Gauss Pulling Force: 161 lbs. Pole Orientation: Axially […]
N50 Neodymium Iron Boron Radially Annular Magnet, Diametrically Radiation Oriented Annular Magnet for PM servo motors, step motors, Sintered Neodymium Iron Boron Multipolar Radiation Magnetic Ring, Double Poles Radially Magnetized Ring Rare Earth Magnet China supplier N50 Neodymium Iron Boron Radially Annular Magnet Feature: 100% Brand New By MPCO Top Quality Neodymium Iron Boron (NdFeB) […]
N42 Neodymium Uni-pole Radial Annular Magnets, Diametrically Radiation Oriented Annular Magnet, Sintered Neodymium Iron Boron Unipolar Radiation Magnetic Ring, Single Pole Radially Magnetized Ring Rare Earth Magnet China Manufacturer N42 Neodymium Uni-pole Radial Annular Magnets Feature: 100% Brand New By MPCO Top Quality Neodymium Iron Boron (NdFeB) Rare Earth Magnets Magnetic direction: uni-pole Radial Oriented; […]
Uni Pole Diametrically Sintered NdFeB Annular Magnet, Radiation Oriented Annular Magnet, Sintered Neodymium Unipolar Radiation Magnetic Ring, Single-pole radial magnetic rings for permanent magnet motors, Radially Magnetized Ring Rare Earth Rotor Magnet China Factory Uni Pole Diametrically Sintered NdFeB Annular Magnet Feature: 100% Brand New By MPCO Top Quality Neodymium Iron Boron (NdFeB) Rare Earth […]