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Condensation corrosion of carbon steel at low to moderate surface temperature and iron carbonate precipitation kinetics
被引:21
|作者:
Islam, Md Mayeedul
[1
]
Pojtanabuntoeng, Thunyaluk
[1
]
Gubner, Rolf
[1
]
机构:
[1] Curtin Univ Technol, Dept Chem Engn, Sch Chem & Petr Engn, Curtin Corros Engn Ind Ctr, Bentley, WA 6102, Australia
关键词:
Carbon steel;
SEM;
Weight loss;
CO2;
corrosion;
Kinetic parameters;
THE-LINE CORROSION;
CO2;
CORROSION;
MECHANISTIC MODEL;
MILD-STEEL;
DIOXIDE CORROSION;
PART;
MICROSTRUCTURE;
PRODUCTS;
LAYERS;
FILMS;
D O I:
10.1016/j.corsci.2016.05.006
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
This study investigates the influence of surface temperature and droplet retention time (DRT) on the corrosion rate, FeCO3 supersaturation, and scaling tendency of carbon steel exposed to water condensation. This corrosion phenomenon is also known as top of the line corrosion (TLC). TLC is found to be governed by surface temperature irrespective of water condensation rates (WCR) at low surface temperature (15 degrees C). The results also demonstrate that the DRT directly influences FeCO3 supersaturation and scale formation. A new kinetic constant for the calculation of FeCO3 precipitation rate under condensing condition at the top of the line is proposed. (C) 2016 Elsevier Ltd. All rights reserved.
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页码:139 / 150
页数:12
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