What are the applications of magnetic materials

Permanent magnet material is a material with wide hysteresis loop, high coercivity, high remanence, and can maintain constant magnetism once magnetized. Also called hard magnetic material. In practice, the permanent magnet material works in the demagnetization part of the second quadrant of the hysteresis loop after deep magnetic saturation and magnetization. Commonly used permanent magnet materials are divided into AlNiCo permanent magnet alloys, FeCrCo permanent magnet alloys, permanent magnet ferrites, rare earth permanent magnet materials and composite permanent magnet materials.

Soft magnetic material is a magnetic material with low coercivity and high permeability. Soft magnetic materials are easy to magnetize and easy to demagnetize, and are widely used in electrical and electronic equipment. The most widely used soft magnetic materials are iron-silicon alloys (silicon steel sheets) and various soft ferrites.

Application of permanent magnet material:

①The main applications based on the principle of electromagnetic force are: speakers, microphones, electricity meters, buttons, motors, relays, sensors, switches, etc.

②The applications based on the principle of magnetoelectric action mainly include: microwave electron tubes such as magnetrons and traveling wave tubes, picture tubes, titanium pumps, microwave ferrite devices, magnetoresistive devices, Hall devices, etc.

③The main applications based on the principle of magnetic force are: magnetic bearings, mineral concentrators, magnetic separators, magnetic chucks, magnetic seals, magnetic blackboards, toys, signs, password locks, copiers, thermometers, etc. Other applications include: magnetic therapy, magnetized water, magnetic anesthesia, etc.

Application of soft magnetic materials:

Mainly used in magnetic antennas, inductors, transformers, magnetic heads, earphones, relays, vibrators, TV deflection yokes, cables, delay lines, sensors, microwave absorbing materials, electromagnets, high-frequency acceleration chambers for accelerators, magnetic field probes, and magnetic substrates , Magnetic field shielding, high-frequency quenching energy, electromagnetic chuck, magnetic sensitive components (such as magneto-caloric materials as switches), etc.