Ferrite Y35 Block Magnet
Ferrite magnets are metal oxides with ferromagnetic properties. In terms of electrical properties, the resistivity of ferrite is much larger than that of metal and alloy magnetic materials, and it has higher dielectric properties. Ferrite magnetic energy also shows high permeability at high frequencies. As a result, ferrite has become a non-metallic magnetic material widely used in the field of high frequency and weak current. Due to the low ferrite magnetic energy stored in the unit volume, saturated magnetization and low (usually only pure iron 1/3 ~ 1/5), and thus limits its higher requirements in the low-frequency magnetic energy density in the field of high voltage and high power applications.
Ferrite magnet it is made of ferric oxide and other metal oxides of one or more of the following (for example, nickel oxide, zinc oxide, manganese oxide, magnesium oxide, oxide barium and strontium oxide, etc.) preparation of sintering. Its relative magnetic conductivity can be as high as thousands, the resistivity is 1011 times of metal, and the eddy current loss is small, suitable for making high frequency electromagnetic devices. Ferrite has five kinds: hard magnetic, soft magnetic, moment magnetic, spin magnetic and pressure magnetic. It is called ferromagnetic ferromagnetic substance or ferromagnetic oxygen, and its production process and appearance are similar to ceramics, so it is also called magnetic porcelain. Ferrite is a compound oxide of iron and one or more other suitable metallic elements. The most important difference between ferrite magnetic materials and metal or alloy magnetic materials is electrical conductivity. Usually the resistivity of the former as Ω 102 ~ 108 cm, while the latter is only 10-6 ~ 10-4 Ω · cm.
Ferrite magnet itself can only be processed on its outer diameter and thickness, but can not be split. As its original segmentation performance change, there will be a weak magnetic phenomenon. Outside diameter and thickness for processing for grinding processing, processing after appearance can produce change, but the original shape will not change.
Ferrite magnet is a kind of permanent magnet mainly made from SrO or BaO and Fe2O3. Compared with other permanent magnet magnets, ferrite magnets are hard, brittle and have lower magnetic energy. However, it is not easy to degausse and corrode, and the production process is simple and the price is low.