Development and types of soft magnetic materials
The application of soft magnetic materials in industry began at the end of the nineteenth Century. With the rise of electric power and telecommunication technology, low carbon steel has been used to make motors and transformers. In the core of the inductance coil of telephone lines, fine iron powder, iron oxide and fine wire are used.
About new materials——Amorphous soft magnetic alloy
Amorphous metals and alloys are a new field of materials that came out in 70s. Its preparation technology is completely different from the traditional method. Instead, the cooling technology is about
Specific characteristics and application of amorphous magnetic core
I first throw a brick, 1, iron based amorphous; Is now the largest output for distribution transformers; 2. Cobalt-based amorphous; The main base of the material is Co alloy. This material is very expensive because it contains Co. It is rarely used now, but now some special places are still used, such as some occasions requiring stress resistance. 3. Fe-ni based amorphous; It is usually said that nickel-based amorphous, because it contains relatively high nickel, so the price stability is poor, and the performance is basically surpassed by nanocrystalline, so now basically can not see. 4, ultrafine crystal; 5. Nanocrystalline; Remember the earliest time called ultramicro crystal, then nano hot, we all like to rely on the nano. I feel that they are basically the same, is the so-called minimum grain size problems.
Research Progress and Application Prospect of Fe-based Soft Magnetic Amorphous/Nanocrystalline Alloys
Research Progress and Application Prospect of ferro-based soft magnetic amorphous/nanocrystalline alloys reviewed the discovery and development history of soft magnetic amorphous alloys, introduced the important contributions of relevant basic research achievements and technological progress to the development and industrial application of ferro-based soft magnetic amorphous/nanocrystalline alloys, and pointed out the challenges and development direction in the development and application of ferro-based soft magnetic amorphous alloys. The corresponding author of the above work is Professor Yao Kefu of the School of Materials Science, Tsinghua University.
Uncover the type and use of nanocrystalline magnetic core (attached figure)!
Nanocrystalline magnetic core has high permeability, high saturation magnetic induction, low coercivity and low loss. Suitable for EMC/EMI filter common mode inductor, high frequency transformer, frequency converter, current transformer and other occasions. In the field of new energy, such as solar inverter, wind power generation and other occasions has also been widely used.
Classification of magnetic materials
Hard magnetic material: when the magnetic field is removed, can still have magnetic materials; Soft magnetic materials are materials that have high magnetic induction when the magnetization field is present and lose magnetism when the magnetization field is removed
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