Effect of Cu and Mo Additions on the Crystallization Behavior and Magnetic Properties of Fe80Zr10B10 Alloy

Fe 80 Zr 10 B 10 , Fe 80 Zr 10 B 9 Cu 1 , and Fe 80 Zr 8 Mo 2 B 10 amorphous alloys were prepared by melt-spinning and annealed at various temperatures. The effect of Cu and Mo additions on the thermal property, microstructure and magnetic properties of Fe 80 Zr 10 B 10 alloy is studied. Both Cu and Mo additions decrease the crystallization activation energy. The crystallization process of Fe 80 Zr 10 B 10 alloy is very complex. Both Cu and Mo additions simplify the crystallization process. But a few α-Mn-type phase is still observed in the initial crystallization stage of Mo-containing alloy. Both Cu and Mo additions increase saturation magnetization ( M s ) and decrease coercivity ( H c ) of alloys. The addition of Cu is beneficial to decrease H c in the initial crystallization stage, and the addition of Mo is beneficial to decrease H c at high temperatures.