The main differences between neodymium magnets and ferrite magnets of driver units are as follows: 1. The performance of ferrite magnets is not as good as neodymium magnets. 2. In terms of price. Ferrite is much cheaper than neodymium magnets. 3. neodymium magnets have good temperature resistance, while ordinary neodymium magnets are usually only 80 degrees Celsius, and demagnetization will occur when the working temperature exceeds this temperature. 4. The stability of ferrite is very good. It is an oxide and is very stable. neodymium is an alloy, which is easy to oxidize and must be protected by a coating.
Ferrite magnets are ferromagnetic metal oxides. In terms of electrical properties, the resistivity of ferrite is much larger than that of metal and alloy magnetic materials, and it also has higher dielectric properties. The magnetic properties of ferrites also show that they have high permeability at high frequencies. Therefore, ferrite has become a non-metallic magnetic material widely used in the field of high frequency weak current. It is a non-metallic magnetic material, which is a composite oxide (or ferrite) of ferric oxide and one or more other metal oxides. The magnetic force is usually 800-1000 Gauss, which is often used in horn speakers, vary alarm speakers and other instruments.
The advantages of neodymium magnets are high cost performance and good mechanical properties; the disadvantages are that the Curie temperature point is low, the temperature characteristics are poor, and it is easy to be pulverized and corroded. It must be adjusted by adjusting its chemical composition and adopting surface treatment methods. improvement, in order to meet the requirements of practical application. neodymium belongs to the third generation of rare earth permanent magnet materials. It has the characteristics of small size, light weight and strong magnetic properties. It is the magnet with the best performance and price ratio. The advantages of high energy density make neodymium permanent magnet materials widely used in modern industry and electronic technology. In the state of bare magnetism, the magnetic force can reach about 3500 Gauss.
