Effect of Fe ion concentration on corrosion of carbon steel in CO2 environment

被引：18
|
作者：
Rogowska, M. [1 ,2 ]
Gudme, J. [1 ]
Rubin, A. [1 ]
Pantleon, K. [2 ]
Ambat, R. [2 ]
机构：
[1] Natl Oilwell Varco Denmark IS, Flexible Pipe R&D, Priorparken 480, DK-2605 Brondby, Denmark
[2] Tech Univ Denmark, Dept Mech Engn, Bldg 425, DK-2800 Lyngby, Denmark
来源：
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2016年 / 51卷 / 01期
关键词：
Carbon steel; Carbon dioxide; Supersaturation; Linear polarisation resistance; Scanning electron microscopy; X-ray diffraction; Passivation; MILD-STEEL; DIOXIDE CORROSION; MECHANISTIC MODEL; PART; FILMS; MICROSTRUCTURE;
D O I：
10.1179/1743278215Y.0000000029
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, the corrosion behaviour of steel wires in solutions containing different concentrations of Fe2+ was investigated by the linear polarisation resistance method, while the evolution of pH was monitored in situ and changes of the Fe2+ concentration were monitored ex situ. Characterisation of the corrosion scales was performed using microscopic and diffraction techniques. Scale analysis revealed that the passivation of samples, exposed to initially highly Fe2+ supersaturated solution, occurred when a formation of a double layer took place, resulting in 30 times lower corrosion rate compared to samples tested in solutions without initial Fe2+.
引用
收藏
页码：25 / 36
页数：12
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