The applications of Neodymium Iron Boron magnets are as follows:
Electro-acoustic field: loudspeaker, receiver, microphone, alarm, stage sound, car sound, etc.
Electronic appliances: permanent magnet vacuum circuit breaker, magnetic retaining relay, watt-hour meter, water meter, microphone, reed, sensor, etc.
Motor field: VCM, CDDVD-ROM, generator, motor, servo motor, micro motor, motor, vibration motor, etc.
Mechanical equipment: magnetic separation, magnetic separator, magnetic suspension, magnetic machinery, etc.
Medical care: nuclear magnetic resonance instrument, medical equipment, magnetic health care products, magnetized fuel saver, etc.
Other industries: magnetized wax preventer, pipe descaling device, magnetic fixture, automatic mahjong machine, magnetic lock, door and window magnetism, stationery magnetism, box magnetism, leather magnetism, toy magnetism, tool magnetism, gift packaging, etc.
The third generation of rare earth permanent magnet NdFeB is the strongest permanent magnet in modern magnets. Its BHmax value is 5-12 times that of ferrite magnet and 3-10 times that of Al-Ni-Co magnet. Its coercivity is 5-10 times that of ferrite magnet and 5-15 times that of Al-Ni-Co magnet. Its potential magnetic properties are extremely high and it can absorb weights equivalent to 640 times its weight.
Because the main raw material of Neodymium Iron Boron magnets is very cheap, the storage of rare earth neodymium is 10-16 times more than that of samarium, so its price is much lower than that of samarium cobalt magnet.
Neodymium Iron Boron magnets have better mechanical properties than samarium cobalt magnets and aluminum nickel cobalt magnets and are easier to cut and drill holes and process complex shapes.
The disadvantage of Neodymium Iron Boron magnets is its poor temperature performance, high magnetic loss at high temperature and low maximum operating temperature.
Generally about 80 degrees Celsius, after special treatment of magnets, its maximum operating temperature can reach 200 degrees Celsius.
Because the material contains a lot of neodymium and iron, it is easy to rust, which is also a major weakness. So Neodymium Iron Boron magnets must be coated. Nickel (Ni), zinc (Zn), gold (Au), chromium (Cr), epoxy resin (Epoxy) can be electroplated.
Neodymium Iron Boron magnets are widely used in aerospace, electronics, electromechanical, instrumentation, medical and other fields. And the non-technical field is also used more and more widely, such as adsorption magnets, toys, jewelry and so on.
