Technical Services
Types of permanent magnet materials
Magnetism is one of the basic properties of matter. Magnetic phenomena are associated with various forms of charge movement, due to the electron movement and spin inside the material will produce a certain size of the magnetic field, which produces magnetism. All substances are magnetic. According to the different magnetic nature can be divided into paramagnetic material, diamagnetic material, ferromagnetic material, antiferromagnetic material, and ferrimagnetic material, ferromagnetic material and ferrimagnetic material belonging to the strong magnetic material, usually these two types of material collectively referred to as magnetic materials.
Classification, performance characteristics and uses of magnetic materials:
1. Ferrite magnetic materials:Generally refers to the conformity oxides of iron oxide and other metal oxides. Most of them are ferrimagnetic. Features: The resistivity is much higher than that of metal, about 1-10(12 times)/cm, so the vortex loss and skin effect is small, suitable for high frequency use. The saturation magnetization is low, not suitable for high magnetic density occasions. Curie temperature is relatively low.
2. Ferromagnetic materials: Refers to materials with ferromagnetic properties. For example, iron-nickel-cobalt and its alloys, alloys of certain rare earth elements. Below the Curie temperature, the material has a large magnetization when the external magnetism is added.
3. Ferromagnetic materials:Refers to ferrimagnetic materials, such as various ferrites, below the Nair temperature, when the external magnetic material has a larger magnetization.
4. Permanent magnet material:The magnet is magnetized thick to remove the magnetic field is still strong magnetic, characterized by high coercivity and large magnetic energy product. Can be divided into aluminum nickel cobalt, rare earth cobalt, neodymium iron boron and so on. Ferrite permanent magnets, for example, barium ferrite, strontium ferrite, other permanent magnets, such as plastic magnets.
5, Soft Magnetic MaterialsMaterials that are easily magnetized and demagnetized. Mn-Zn ferrite soft magnetic material, its working frequency is between 1K-10M. Nickel zinc ferrite soft magnetic material, working frequency is generally 1-300MHZ
6. Metal soft magnetic materials:Compared with ferrite, it has high saturation magnetic induction intensity and low coercive force, such as engineering pure iron, iron-aluminum alloy, iron-cobalt alloy, iron-nickel alloy, etc., commonly used in transformers, etc.
Types of permanent magnet materials
2022-10-09
Influence of Voltage Fluctuation on Motor
2022-10-09
Focus on us
©COPYRIGHT 2024 Nanjing DYT Permanent Magnet Technology Co., Ltd. ALL RIGHTS RESERVED |SEO | Website:www.300.cn