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Ndfeb magnetic ferrite and contrast

by:Newland     2020-03-29
In permanent magnet, ndfeb magnet's main advantage is high cost performance, good features, mechanical direction shortcoming in low Curie temperature, temperature characteristic is poor, easy pulverization corrosion, must adjust its chemical composition and surface treatment ( Such as galvanized) Can improve its chemical properties, in order to meet the needs of practical application. Ferrite permanent magnet is a ferromagnetic metal oxide. Is for electrical resistivity of ferrite permanent magnet material is much higher than the metal and alloy magnetic materials, dielectric performance slightly higher. Ferrite permanent magnet material under high frequency and high permeability. Therefore, ferrite permanent magnet material has become a widely used in the nonmetallic magnetic materials in the field of high frequency weak current. Ndfeb permanent magnet materials belongs to the third generation of rare earth permanent magnet materials. Is filial piety the characteristics of light weight, strong magnetic volume. It is the best price performance ratio of the magnet. In the magnetic field, it is called the king of the magnet - — Strong magnet. The advantages of high energy density makes the ndfeb permanent magnet material in modern industry and has been widely used in electronic technology. In the condition of the bare magnetic, magnetic field force of about 3500 gauss. Magnetic ferrite permanent magnet, also known as iron oxide or ceramic, belong to the nonmetallic magnetic material, magnetic iron oxide with one or more other metal oxide compound oxide ( Or is ferrite) 。 Magnetic usually is 800 - 1000 gauss, usually used for speakers, speakers, and other instruments. The ndfeb permanent magnet material and ferrite permanent magnet material is the main difference is as follows: 1, the performance of the ferrite permanent magnet ndfeb permanent magnet materials. 2, price. Far cheaper than ferrite permanent magnet ndfeb permanent magnets. 3, ndfeb permanent magnet materials have good temperature resistance, and ordinary ndfeb permanent magnet materials can only work at 80 degrees, more than 80 degrees can occur demagnetization. 4, ferrite permanent magnet is very stable. It is the oxide and very stable. Ndfeb permanent magnets for the alloy material, easy oxidation. A: powerful magnets can according to your size? Next: what magnet surface plating conductivity is better?
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