The formation mechanism of corrosion scale and electrochemical characteristic of low alloy steel in carbon dioxide-saturated solution
The formation mechanism of corrosion scale and electrochemical characteristic of low alloy steel in carbon dioxide-saturated solution
复制标题
低合金钢在二氧化碳饱和溶液中腐蚀皮形成机理及电化学特性
DOI：
10.1016/j.corsci.2011.12.025
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发表时间：
2012-04-01
影响因子：
8.3
通讯作者：
Lu, M. X.
中科院分区：
文献类型：
--
作者：
Sun, J. B.;Zhang, G. A.;Lu, M. X.
通过电化学测试和表面表征，研究了低合金钢在CO2饱和溶液中腐蚀产物膜的形成机理和电化学特性。结果表明，电化学行为与腐蚀产物膜的形成和钢的微观结构有关。在初始极化阶段，铁素体优先溶解并留下Fe3C，这导致片层Fe3C之间的高Fe 2+离子浓度。这种情况有利于在层状Fe3C之间形成FeCO3氧化皮。随着极化次数的进一步增加，整个电极表面被FeCO3膜覆盖。皇冠版权所有（C）2011由爱思唯尔有限公司出版。保留所有权利。
The formation mechanism of corrosion scale and electrochemical characteristic of low alloy steel in CO2-saturated solution were investigated by electrochemical measurements and surface characterization. The results show that the electrochemical behavior is associated with the formation of corrosion scale and the microstructure of steel. At the initial polarization stage, ferrite dissolves preferentially and leaves Fe3C behind, which results in high Fe2+ ions concentration between lamellar Fe3C. This situation facilitates the formation of FeCO3 scale between the lamellar Fe3C. With further increase of polarization times, the whole electrode surface is covered by FeCO3 scale. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.