Abstract
The effect of Nb micro-addition on the glass-forming ability, magnetic and corrosion properties of (Fe0.76Si0.09B0.1P0.05)100−xNbx (x=0–4) alloy system was investigated. It was found that micro-addition of 1% Nb is effective in increasing the critical diameter for glass formation from 2.5 for the base alloy to 3.5mm for (Fe0.76Si0.09B0.1P0.05)99Nb1 glassy alloy. Moreover, the 1% Nb-containing glassy alloy exhibits excellent soft-magnetic properties, i.e., high saturation magnetization (Is) of 1.45T and low coercive force (Hc) of 1A/m. A significant improvement in corrosion resistance of the glassy alloys with Nb micro-alloying in 1N H2SO4 solution is also observed. The good combination of high glass-forming ability (GFA), excellent soft-magnetic properties and enhanced corrosion resistance indicates the possibility of future development as new engineering and functional materials.
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