The performance of ferrite materials is closely related to the four aspects of raw materials, formulation, molding, and sintering, and is also a key research issue in the principle of ferrite technology. However, there are significant differences in the performance of ferrite materials made under the same formula and process. This is mainly due to differences in the specific quality of each process link, such as ball milling, forming, and sintering. Therefore, how to fully leverage the role of various process links and improve quality is a key issue in improving ferrite materials.

Usually, ferrite polycrystalline materials are manufactured using powder metallurgy method, as shown in the specific manufacturing process flow chart 6. In recent years, the large-scale production technology and equipment of ferrite materials have undergone greater development abroad. TDK Company in Japan adopts a completely closed pipeline production method from ingredient to material ferrite, which purifies the production environment, improves production efficiency, improves manual labor conditions, ensures the consistency and stability of ferrite material performance, and meets the requirements of large-scale modern industries. In addition, in order to obtain high-performance ferrite materials, chemical methods are often used to prepare high-quality ferrite materials. For example, acid salt mixed thermal decomposition method, chemical co precipitation method, jet combustion method, and electrolytic co precipitation method are used. The chemical method can overcome the shortcomings of the powder metallurgy method, such as the difficulty in improving the Dry media reaction, uneven powder mixing, difficult separation and the great influence of the activity of raw materials on the product performance, which can significantly improve the performance of ferrite materials. Its disadvantage is high cost and relatively complex process