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Corrosion Behaviors of Bulk Amorphous Alloy Cu-Zr-Ti-Sn and Its Crystallized Form in 3.5%NaCl Solution |
CHEN Peng; QIN Fengxiang; ZHANG Haifeng; LIU Changsheng; HU Zhuangqi |
Shenyang National Laboratory for Materials Science; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 11001 |
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Cite this article:
CHEN Peng; QIN Fengxiang; ZHANG Haifeng; LIU Changsheng; HU Zhuangqi. Corrosion Behaviors of Bulk Amorphous Alloy Cu-Zr-Ti-Sn and Its Crystallized Form in 3.5%NaCl Solution. Acta Metall Sin, 2004, 40(2): 207-210 .
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Abstract Corrosion behaviors of bulk amorphous alloy Cu60Zr30Ti10 and (Cu60Zr30Ti10)99Sn1 and their crystallized forms in 3.5%NaCl solution were studied by potentiodynamic polarization
experiments and electrochemical impedance spectroscopy (EIS). The results
of potentiodynamic polarization experiment show that the anodic reaction
of the amorphous (Cu60Zr30Ti10)99Sn1 has a tendency to passivation,
and has lower anodic current density. Moreover, EIS experimental result shows
that the amorphous (Cu60Zr30Ti10)99Sn1 alloy has higher charge transfer reaction resistance (Rt) than that of the amorphous Cu60Zr30Ti10. Compared with the amorphous alloys,
the crystallized alloys have larger tendency to passivation. EIS results of crystallized alloys show two impedance elements, i.e., high frequency and low frequency capacitive loops.
The charge transfer reaction resistances of crystallized alloys are
larger than those of amorphous alloys.
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Received: 18 March 2003
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