Abstract
In this study, Cu50Zr40Ag10 amorphous alloy ribbons were prepared by a single roller melt-spinning method. The crystallization behavior of the Cu50Zr40Ag10 amorphous alloy has been investigated using X-ray diffraction (XRD), differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and high resolution TEM (HRTEM). Moreover, the polarization and passivation behaviors of the as-quenched and as-annealed amorphous alloy have been studied in 1 N H2SO4. The surfaces of corroded samples have been examined using scanning electron microscopy (SEM) and the element distribution across the pits has been analyzed using energy dispersive spectrometer (EDS). The results show that the Cu50Zr40Ag10 amorphous alloy has a large supercooled region up to 36 K. The ω-(ZrCu), ZrO2 and Cu10Zr7 phases can firstly precipitate from the amorphous matrix below glass transition temperature during annealing for 30 min. Moreover, the corrosion resistance of the as-quenched amorphous alloy is better than that of partial and full crystallization products. In addition, Zr plays a crucial role in enriching the passive film and enhancing corrosion resistance.
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Acknowledgments
The authors would like to acknowledge financial support from the National Natural Science Foundation of China (No. 50801031, No. 50871047) and the Natural Science Foundation of Shandong Province (ZR2010EMO71). This work was also supported by Doctoral Foundation of University of Jinan (No. XBS1009).
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Presented in part at the 1st International Congress on Advanced Materials held in Jinan, PRC from May 12–17, 2011.
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Li, C., Wang, Y. & Geng, H. Crystallization Behavior and Corrosion Resistance of Cu50Zr40Ag10 Amorphous Alloy. J Inorg Organomet Polym 21, 919–924 (2011). https://doi.org/10.1007/s10904-011-9540-4
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DOI: https://doi.org/10.1007/s10904-011-9540-4