A MECHANICAL ALLOYING STUDY ON THE Fe_(69.5)Cu_(1.5)V_7Si_(12)B_8Al_2

The nanometer alloy sample of Fe 69.5Cu 1.5V 7Si 12B 8Al 2 was prepared by a method of mechanical alloying. The influence of ball-milling time on amorphous character was studied and the magnetic permeabilities under different frequencies of the pressed samples were measured. The results show that an alloy may be formed by ball-milling and amorphous character is enhanced with the increasing of the milling time. New phase appears when the milling time reaches a certain time. The magnetic property changes after a period of milling time. The real part of complex magnetic permeabilities increases with milling time within 72 hours and decreases after 72 hours milling. The frequency dependence of μ 1 is not significant. In the range from 4 to 13 MHz, the loss tangent, tg δ, decreases with the increasing of milling time.