Basic Definition Of Iron-based Amorphous Alloy

- Apr 01, 2018 -

Amorphous alloy, or metallic glass, is a new type of material that was introduced in the 1970s. It is a solid alloy (thin ribbon) obtained by once-molding molten steel into a thin strip having a thickness of 30 μm using a quenching technique. It is different from the crystal structure of regularly arranged atoms in the cold-rolled silicon steel material. It is the amorphous structure of this alloy whose atoms are arranged in an irregular manner, which makes it have a narrow BH loop, with high permeability and low loss characteristics; The irregular arrangement of atoms in the amorphous alloy restricts the free passage of electrons and results in a 2-3 times higher resistivity than the crystalline alloy, which also helps reduce eddy current losses. Transformer iron cores made of amorphous alloys have a no-load loss that is reduced by about 75% compared to conventional transformers using silicon steel sheets, making the amorphous alloy transformers very energy-efficient and environmentally friendly when used as amorphous alloys. When the transformer core is used in oil-immersed transformers, it can significantly reduce many harmful gases. Therefore, more and more manufacturers use amorphous alloys as raw materials for transformer cores.