Magnetic Properties of FeSiBC Amorphous Alloy Powder Cores Using Mechanical-crushed Powder

摘要

The FeSiBC amorphous powder cores were fabricated using powders of the FeSiBC amorphous ribbons which were mechanically crushed for a short time,and the relationship between magnetic properties and powder particle sizes was evaluated.The saturation magnetization B s of the amorphous Fe82Si2B15C1 alloy was 1.62 T,which provided a superior dc-bias property for the powder cores.Meanwhile,a stable permeability up to high frequency range over 10 MHz and the low core loss of 400kW/m3 at f=50kHz and B m=0.1Twere obtained.These excellent high-frequency magnetic properties of the FeSiBC amorphous powder cores could be attributed to the effective electrical insulation between the FeSiBC amorphous powders made by mechanical crushing.