The role of iron-based nanocrystalline alloy

Date：2015-11-03 09:53:00 Hits：

Iron-based nanocrystalline alloy () is mainly composed of iron, add a small amount of Nb, Cu, Si, B elements of alloy by rapid solidification process of a kind of amorphous material, the amorphous material can be obtained after heat treatment, the diameter distribution of dispersion in the amorphous matrix, known as microcrystalline or nanocrystalline material, nanocrystalline materials.

Nanocrystalline materials have excellent integrated magnetic: high saturation magnetic induction (1.2 T), high initial permeability (8 x 104), low Hc (0.32 A/M), the low loss at high frequency under the high magnetic induction (P0.5 T / 20 KHZ = 30 w/kg), the resistivity of 80 mu Ω/cm, than permalloy (50 to 60 mu Ω/cm) tall, the longitudinal or transverse magnetic field treatment, can get high Br (0.9) or low Br value (1000 gs). Is currently on the market the best comprehensive properties of materials; : the best frequency range: 20 KHZ - 50 KHZ. Widely used in high-power switching power supply, inverter power supply, magnetic amplifier, high-frequency transformer, high frequency transformer, high frequency reactor core, current transformer core, leakage protection switch, common-mode inductor core.

Nanocrystalline alloy high magnetic permeability, Hc value close to the crystalline state of mo alloy and cobalt-based amorphous, and saturated magnetic induction Bs in nickel permalloy and its heat treatment process is simple, is a kind of ideal low-cost high-performance soft magnetic materials;