Characteristics of CO 2  corrosion scale formed on P110 steel in simulant solution with saturated CO 2 | Zendy

Yin Zhifu | Zendy; Zhao Wenzhen | Zendy; Bai Zhenquan | Zendy; Feng Yaorong | Zendy

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Characteristics of CO 2 corrosion scale formed on P110 steel in simulant solution with saturated CO 2

Author(s) -

Yin Zhifu,

Zhao Wenzhen,

Bai Zhenquan,

Feng Yaorong

Publication year - 2008

Publication title -

surface and interface analysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.52

H-Index - 90

eISSN - 1096-9918

pISSN - 0142-2421

DOI - 10.1002/sia.2867

Subject(s) - corrosion , microstructure , carbonate , carbon steel , materials science , carbon dioxide , metallurgy , x ray photoelectron spectroscopy , chemical engineering , chemistry , organic chemistry , engineering

The SEM, X‐ray diffraction (XRD), and XPS were employed to systematically characterize the component and microstructure of the corrosion scale formed on P110 steel exposed to carbon dioxide (CO 2 ) environment. A loose and porous microstructure in corrosion scale was observed under turbulent flow condition for 120 h at 100 °C with a carbon dioxide partial pressure of 4 MPa in which the principal component was iron carbonate (FeCO 3 ), whereas at 160 °C the corrosion scale was composed mainly of FeCO 3 and a little amount of FeO(OH). In addition, complex carbonate (Mg,Fe)CO 3 was produced because some Fe positions in FeCO 3 lattice were substituted by Mg. It showed that a double‐layer structure of corrosion scale was observed at 160 °C compared with the result at 100 °C. Copyright © 2008 John Wiley & Sons, Ltd.

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