What are the characteristics of nanocrystalline cores?

Nanocrystalline magnetic core is a new soft magnetic material with high Bs, high effective permeability, high DC bias stability, high temperature stability, wide frequency adaptability, low power consumption, low cost, applied to high power, High frequency, miniaturized, high slew rate switching power transformers and chokes.

Now the solar energy industry inverter, water energy, air energy, electric energy conversion and charging of hybrid electric vehicles have great market space and future, because the performance of nanocrystalline magnetic core has extremely high controllability.


The surface of the magnetic core is treated with insulation, mixed with the binder, and then pressed and annealed. There are basically three ways to obtain nanocrystalline powder: amorphous strips are broken after annealing and crystallization, mechanical alloying, and molten alloy atomization. At present, mechanical alloying is still in the laboratory research stage, and the amorphous ribbon crystallization method is produced in small batches by a few companies in China, but the market cannot be expanded due to cost reasons. Compared with other methods, the molten alloy atomization method has high efficiency and low cost. The disadvantage is that the powder produced has low amorphous content and high loss.
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