In situ synchrotron X-ray diffraction study of surface scale formation during CO2 corrosion of carbon steel at temperatures up to 90 °C

被引：68
作者：
Ingham, B. [1 ]
Ko, M. [2 ]
Kear, G. [3 ]
Kappen, P. [4 ]
Laycock, N. [2 ]
Kimpton, J. A. [5 ]
Williams, D. E. [6 ]
机构：
[1] Ind Res Ltd, Lower Hutt 5045, New Zealand
[2] Quest Integr Grp, Lower Hutt 5045, New Zealand
[3] Univ Southampton, Electrochem Engn Lab, Energy Technol Res Group, Southampton SO17 1BJ, Hants, England
[4] La Trobe Univ, Ctr Mat & Surface Sci, Dept Phys, Bundoora, Vic 3086, Australia
[5] Australian Synchrotron, Clayton, Vic 3168, Australia
[6] Univ Auckland, MacDiarmid Inst Adv Mat & Nanotechnol, Dept Chem, Auckland 1022, New Zealand
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 09期
关键词：
X-ray diffraction; Steel; DIOXIDE CORROSION; MILD-STEEL;
D O I：
10.1016/j.corsci.2010.05.025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In situ synchrotron X-ray diffraction was used to follow the formation of corrosion product scales on carbon steel in CO2 saturated brine at temperatures from 40 to 90 degrees C. The corrosion process was accelerated by applying a small anodic current, and in selected tests a scale inhibitor, amino trimethylene phosphonic acid (ATMPA), was added. Siderite was identified as the major phase in the scale formed in all conditions. With increasing temperature, the scale formation rate increased, while the scale thickness and crystallite size decreased. Above 60 degrees C, the scale became increasingly protective. The scale thickness and crystallite size decreased with increasing ATMPA concentration. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3052 / 3061
页数：10
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