EIS testing of new aluminium sacrificial anodes

被引：1
|
作者：
M.A. Talavera
S. Valdez
J.A. Juarez-Islas
B. Mena
J. Genesca
机构：
[1] Universidad Nacional Autónoma México,Dpto. Ingeniería Metalúrgica, Facultad Química
[2] UNAM,Instituto Investigación Materiales
[3] Universidad Nacional Autónoma México,undefined
[4] UNAM,undefined
来源：
Journal of Applied Electrochemistry | 2002年 / 32卷
关键词：
aluminium alloys; anode corrosion efficiency; EIS; sacrificial anodes;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Aluminium alloys In/Hg free, suitable as sacrificial anodes for cathodic protection, have been developed. Short-term electrochemical tests were performed on these new alloys to obtain their electrochemical efficiency and to reveal any tendencies to passivation. Samples were galvanostatically held at different current densities, which changed every 24 h according to DNV RP 401. Electrochemical impedance spectroscopy (EIS), polarization curves and electrode potential against time measurements were employed to study the main features of the processes taking place at the alloy–solution interface.
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页码：897 / 903
页数：6
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