文献类型：期刊文献

英文题名：Electrochemical Study on Stability and Corrosion Resistance of low-alloy En39B Reinforcing steel Bar Embedded in Concrete Immersed in Soil Containing Chloride Ions

作者：Song, Jingying[1];Li, Hualei[1];Feng, Hongwei[1]

第一作者：宋晶颖

通讯作者：Song, JY[1]

机构：[1]Xinxiang Univ, Sch Civil Engn & Architecture, Xinxiang 453003, Henan, Peoples R China

第一机构：新乡学院土木工程与建筑学院

通讯机构：[1]corresponding author), Xinxiang Univ, Sch Civil Engn & Architecture, Xinxiang 453003, Henan, Peoples R China.|[1107114]新乡学院土木工程与建筑学院;[11071]新乡学院;

年份：2021

卷号：16

期号：2

起止页码：1-10

外文期刊名：INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

收录：;Scopus(收录号：2-s2.0-85101840271);WOS:【SCI-EXPANDED(收录号:WOS:000620082300044)】；

语种：英文

外文关键词：Corrosion resistance; Electrochemical study; Reinforced concrete; low-alloy steel rebar; Soil contaminated with chloride

摘要：In this work, an electrochemical study on stability and corrosion resistance of low-alloy En39B reinforcing steel bars embedded in concrete immersed to soil contaminated with chloride was performed. The corrosion behavior of En39B steel rebar was studied by electrochemical impedance spectroscopy and polarization analysis. Electrochemical results revealed that the high content of Cr in steel rebar had a significant improvement in the polarization resistance value, showing a high corrosion resistance for En39B sample. The mass-loss measurements revealed a reduction of mass-loss rate in En39B steel rebar due to the higher content of Cr compared to the EN36A which was completely consistent with the results from EIS analysis. The potentiodynamic polarization results indicate that the performance of corrosion resistant in En39B steel reinforced concrete considerably improved with formation of a passive layer to restrain both the anodic and the cathodic corrosion reaction. The surface morphology of En39B immersed in soil contaminated with 3.5 wt% NaCl revealed the formation of low corrosion products on steel which was in agreement with the results achieved from electrochemical assessments.