Use of EIS, ring-disk electrode, EQCM and Raman spectroscopy to study the film of oxides formed on iron in 1 M NaOH

被引:233
作者
Joiret, S
Keddam, M
Nóvoa, XR
Pérez, MC
Rangel, C
Takenouti, H
机构
[1] UPR 15 CNRS, F-75252 Paris 05, France
[2] Univ Vigo, ETSEIM, Vigo 36280, Spain
[3] INETI, P-1699 Lisbon, Portugal
关键词
EIS; EQCM; Raman spectroscopy; oxides;
D O I
10.1016/S0958-9465(01)00022-1
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Different electrochemical techniques (electrochemical impedance spectroscopy (EIS), ring-disk electrode, electrochemical quartz crystal microbalance (EQCM), and in situ Raman spectroscopy) have been employed to study the behaviour of the passive film formed on iron in alkaline medium simulating pore solution in fresh concrete. The study, based. on low scan rate cyclic voltammetry performed over the entire electrolyte stability domain, allows for establishing the influence of the redox activity developing in the oxides layer on the electrochemical behaviour of the system and, thus, to get valuable information on the applicability of classical electrochemical techniques employed to assess corrosion of steel in concrete. The passive film is based on a magnetite-type structure which, in partially reversible processes, can be oxidised and reduced depending on the electrode potential. Those redox processes mask the corrosion process itself. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:7 / 15
页数:9
相关论文
共 29 条
[1]  
Andrade C., 1995, Materials Science Forum, V192-194, P891, DOI 10.4028/www.scientific.net/MSF.192-194.891
[2]  
ANDRADE C, 2000, 7 INT C EL METH CORR
[3]  
Andrade C., 2000, EUROPEAN FEDERATION, P332
[4]  
ANDRADE C, 1997, CEM CONC RES, V27, P1191
[5]  
Andrade C., 1986, Determination of the Corrosion Rate of Steel Embedded in Concrete, P43
[6]  
[Anonymous], 1994, BRIT CORROS J, DOI DOI 10.1179/000705994798267999
[7]   AC QUARTZ CRYSTAL MICROBALANCE APPLIED TO THE STUDIES OF THE NICKEL-HYDROXIDE BEHAVIOR IN ALKALINE-SOLUTIONS [J].
BERNARD, P ;
GABRIELLI, C ;
KEDDAM, M ;
TAKENOUTI, H ;
LEONARDI, J ;
BLANCHARD, P .
ELECTROCHIMICA ACTA, 1991, 36 (3-4) :743-746
[8]  
BERNARD P, 1992, THESIS U P M CURIE P
[9]   Revised Pourbaix diagrams for iron at 25-300 degrees C [J].
Beverskog, B ;
Puigdomenech, I .
CORROSION SCIENCE, 1996, 38 (12) :2121-2135
[10]  
Bouzek K, 1996, J APPL ELECTROCHEM, V26, P919, DOI 10.1007/BF00242043