Study on constant permeable properties of Fe-rich amorphous alloys

The constant permeable properties of Fe-rich amorphous alloy in different heat treatment conditions was investigated.The results show that iron-rich amorphous alloy with high saturation magnetic induction can be made constant permeable core without air-gap through a simple transverse magnetic field heat treatment and the core exhibits good magnetic characteristics.The range of constant permeable field and the permeability were 400A/m and 3.14×10-3T·m/A,respectively,when the magnetic core was heated at 350℃.The range of constant permeable field increased to 600A/m with the increase of the heat treatment temperature.Increasing the transverse magnetic field heat treatment temperature is of benefit to improving the constant permeable properties of the materials.