Study on the corrosion behavior of reinforcing steel in simulated concrete pore solutions using in situ Raman spectroscopy assisted by electrochemical techniques

被引：86

作者：

Chen, Wen ^{[1
]}

Du, Rong-Gui ^{[1
]}

Ye, Chen-Qing ^{[1
]}

Zhu, Yan-Feng ^{[1
]}

Lin, Chang-Jian ^{[1
]}

机构：

[1] Xiamen Univ, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Coll Chem & Chem Engn, Xiamen 361005, Fujian, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 20期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

Reinforcing steel; Corrosion; Simulated concrete pore solution; In situ Raman spectroscopy; Electrochemical impedance spectroscopy; LOW-CARBON STEEL; ALKALINE-SOLUTIONS; SURFACE; THRESHOLD; IMPEDANCE; FILMS; IRON; PH; PROTECTION; CHLORIDES;

D O I：

10.1016/j.electacta.2010.05.003

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In situ Raman spectroscopy, electrochemical impedance spectroscopy (EIS) and polarization curves were used to study the corrosion behavior of reinforcing steel in simulated concrete pore (SCP) solutions (saturated Ca(OH)(2) solutions). Results indicated that the reinforcing steel remained passive in chloride-free SCP solutions. However, the anodic polarization curve of the steel did not exhibit a stable passive region in the SCP solution with 0.5 M NaCl, the corrosion current density exceeded 0.1 mu A cm(-2), the steel surface was unstable with chloride attack and localized corrosion appeared on it with FeCO3 and Fe2O3 as the main corrosion products. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：5677 / 5682

页数：6

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