Passivation and pitting corrosion of nanostructured Sn-Ni alloy in NaCl solutions

被引：53
|
作者：
Refaey, SAM [1 ]
Taha, F [1 ]
Hasanin, THA [1 ]
机构：
[1] Menia Univ, Fac Sci, Dept Chem, Menia 61519, Egypt
来源：
ELECTROCHIMICA ACTA | 2006年 / 51卷 / 14期
关键词：
Sn-Ni alloys; NaCl; passivation; pitting corrosion and impedance technique;
D O I：
10.1016/j.electacta.2005.09.033
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The passivation and pitting corrosion of tin-nickel alloy (34% Ni-66% Sn) in NaCl solution was studied using potentiodynamic, cyclic voltammetry and electrochemical impedance spectroscopy (EIS) techniques complemented by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The effect of concentration of the chloride ion, the switching potential, scans rate and pH on the electrochemical behavior of Sn-Ni alloy is discussed. The data indicate that the corrosion rate and the pitting corrosion of Sn-Ni alloy increases by the increasing of chloride ion concentration. The observed corrosion resistance of electrodeposited Sn-Ni alloy is due to the formation of a thin passive film from tin and nickel oxides. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2942 / 2948
页数：7
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