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Crystallization method to make Fe-based amorphous soft magnetic magnetic material

The use of crystallization methods to form part or all of nanocrystalline structures in amorphous magnetic materials to improve their magnetic properties is one of the important research directions in the field of nanoscale advanced magnetic materials. Nanocrystalline magnetic materials have excellent mechanical and electromagnetic properties that are not found in solid magnetic materials, but usually nanocrystalline magnetic materials are powders, films, or filaments. Because of their small scale, industrialization is difficult. Nanocrystalline ribbons, wires, and powders can be prepared by using the amorphous crystallization method, which is easy to industrialize. The Fe-based amorphous soft magnetic magnetic material can be nanocrystalline by an amorphous crystallization technology to improve its comprehensive soft magnetic properties. Because the laser has the advantages of high heating speed, fast cooling speed and unique heat exchange method, the use of laser technology to study the nanocrystallization of Fe-based amorphous soft magnetic magnetic materials is a new method in the field of amorphous crystallization. The structure and quantity of Fe-based amorphous soft magnetic materials after laser irradiation to produce nanocrystalline phases have a decisive role in their magnetic properties. Therefore, it is necessary to study the formation, microstructure and microscopic fine structure of the crystallization phase and the laser process. The relationship lays the theoretical and technological basis for the preparation of Fe-based nanocrystalline soft magnetic alloys by laser crystallization. When the general amorphous magnetic material is heated near the crystallization temperature, since it is in the metastable state, the required activation energy is small, and therefore it is extremely easy to crystallize and the crystal grains are likely to grow so that fine and uniformly distributed nanocrystals cannot be obtained.

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