Produced using powder metallurgy method, with low residual magnetism and low recovery magnetic permeability. The magnetic circuit structure has high coercivity and strong resistance to demagnetization, making it particularly suitable for dynamic working conditions. The material is hard and brittle, and can be used for cutting processing with emery tools. The main raw material is oxide, so it is not easy to corrode. Working temperature: -40 ℃ to+200 ℃.

Ferrite magnets can be further divided into anisotropy (anisotropy) and isotropy (isotropy). The magnetic properties of isotropic sintered ferrite permanent magnet materials are weak, but they can be magnetized in different directions of the magnet; Heterogeneous sintered ferrite permanent magnet materials have strong magnetic properties, but can only be magnetized along the predetermined magnetization direction of the magnet.

In the actual production of ferrite magnets, raw materials with good chemical composition may not necessarily obtain ferrite magnets with good performance and microstructure, due to the influence of physical properties. The physical properties of the listed iron oxides include average particle size APS, specific surface area SSA, and bulk density BD. Due to the fact that iron oxide accounts for about 70% of the manganese zinc ferrite magnet formula, its APS value has a significant impact on the APS value of the ferrite magnet powder. Generally speaking, the APS value of iron oxide is small, and the APS value of ferrite magnetic powder is also small, which is conducive to accelerating the speed of chemical reactions. However, considering that the fine particle size of the powder is not conducive to subsequent compaction and easy crystallization during sintering, the APS value should not be too small. Obviously, when the APS value of iron oxide is too high, during pre firing, due to the large particle size, only the diffusion reaction of spinel phase can be carried out, and further grain growth process cannot be carried out. This inevitably leads to an increase in the required activation energy during sintering, which is not conducive to solid-state reactions.