Corrosion behavior of Ni-based amorphous alloys and their crystalline counterparts

In this paper, we report the corrosion behavior of Ni59Zr20Ti16Si2Sn3 and Ni53Nb20Ti10Zr8Co6CU3 (at.%) amorphous alloys with glass forming ability (GFA) of similar to 3 mm, and their crystalline counterparts in severe corrosive environment of I M HCl aqueous solution. From the results of polarization curves and X-ray photoelectron spectroscopy (XPS), it was found that the corrosion behavior in Ni-based amorphous alloys is very sensitive to the compositions and the structural homogeneity is favorable for their corrosion-resistance in 1 M HCl aqueous solution. (c) 2007 Elsevier Ltd. All rights reserved.