Sintered Ferrite Magnet
Sintered Ferrite Magnet
Description
Reviews
Sintered Ferrite Magnets
Sintered ferrite, also known as ceramic magnet;
Sintered ferrite magnets mainly include barium ferrite (BaO•6Fe2O3) and strontium ferrite(SrO•6Fe2O3).
Sintered ferrites are divided into isotropic magnets and anisotropic magnets.
The magnetic property of isotropic sintered ferrite is weak, and it has the same magnetic property in any direction.
Multipole magnetization in any direction;Anisotropic sintered ferrite magnets have higher magnetic properties than isotropic ones.
It can only be magnetized in the direction of magnetic field orientation when forming;The main raw material of sintered ferrite is oxide, therefore, it is not affected by high temperature, high humidity or chemical substances (except strong acid and alkali) and be corroded.
应用领域 Application
Because raw materials are cheap and its production process is relatively simple, its cost is low.
Therefore, sintered ferrite is the most widely used permanent magnet material.
It is widely used in permanent magnet motors, DC motors, loudspeakers, dry reed tubes, magnetic separators and adsorption devices, etc.
特点 Feature
Sintered ferrite has excellent demagnetization impedance and no flux loss before and after assembly and demagnetization.
The working temperature of sintered ferrite ranges from -40℃ to +250℃, and the temperature coefficient is poor.
Br temperature coefficient is -0.2%/℃, that is, for every 1℃ increase in temperature, Br decreases 0.2%;
The hardness of sintered ferrite is large, so it can be processed by wire cutting and grinding.
Sintered ferrite brittle, fragile characteristics, production and transportation process should be carefully handled.
性能表 Magnetic properties of sintered ferrite
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