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The application range of magnetic materials is very wide!

Ningbo Tengxiao Magnetic Industry Co., Ltd. is a professional supplier of magnetic products and magnetic equipment, specializing in the production of high-quality NdFeB magnets, magnetic badges and other magnetic equipment, as well as custom industrial magnets. The following introduces the relevant knowledge of magnetic materials.

Overview of magnetic materials: Magnetism is one of the basic properties of matter. The phenomenon of magnetism is related to the movement of various forms of electric charge. Because the movement and spin of electrons inside the substance will produce a certain magnitude of magnetic field, magnetism is produced. All substances are magnetic. Nature can be divided into paramagnetic materials, diamagnetic materials, ferromagnetic materials, antiferromagnetic materials, and ferrimagnetic materials according to different magnetic properties. Among them, ferromagnetic materials and ferrimagnetic materials belong to ferromagnetic materials. Such substances are collectively referred to as magnetic materials.

Classification, performance characteristics and uses of magnetic materials:

1 Ferrite magnetic material: generally refers to the conforming oxide of iron oxide and other metal oxides. Most of them are ferrimagnetic. Features: The resistivity is much higher than that of metals, about 1-10 (12th power) ohms/cm, so the eddy loss and skin effect are small, and it is suitable for high-frequency use. The saturation magnetization is low and it is not suitable for high magnetic density occasions. The Curie temperature is relatively low.

2 Ferromagnetic materials: refers to materials with ferromagnetism. For example, iron nickel cobalt and its alloys, some rare earth element alloys. Below the Curie temperature, the material has a greater magnetization intensity when external magnetization is applied.

3 Ferromagnetic materials: refers to materials with ferromagnetic properties, such as various ferrites, below the Neel temperature, the material has a greater magnetization strength when external magnetization is applied.

4 Permanent magnet material: The magnet is magnetized thick and the external magnetic field is removed, and it still has strong magnetism, which is characterized by high coercivity and large magnetic energy product. It 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 materials: materials that are easy to magnetize and demagnetize. Manganese-zinc ferrite soft magnetic material, its working frequency is between 1K-10M. Nickel-zinc ferrite soft magnetic material, the working frequency is generally 1-300MHZ.

6 Metal soft magnetic material: Compared with ferrite, it has high saturation magnetic induction and low coercivity, such as engineering pure iron, iron-aluminum alloy, iron-cobalt alloy, iron-nickel alloy, etc., which are often used in transformers.

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Tengxiao · 188 days ago
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The application range of magnetic materials is very wide!