An XPS characterization of FeCO3 films from CO2 corrosion

J. K. Heuer; J. F. Stubbins

doi:10.1016/S0010-938X(98)00180-2

An XPS characterization of FeCO₃ films from CO₂ corrosion

J. K. Heuer, J. F. Stubbins

Nuclear, Plasma, and Radiological Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The objective of this study was to systematically characterize iron carbonate (FeCO₃) using X-ray photoelectron spectroscopy (XPS) to aid in the identification of potentially passive films on specimens exposed to carbon dioxide (CO₂) corrosion. To achieve this, an FeCO₃ precipitate was prepared in a chemical reactor under anaerobic conditions and Ostwald ripened for 48 hours at 75°C. Its characteristic binding energies were determined, and its decomposition and oxidation behavior were studied. The examination revealed that FeCO₃ is stable in the ripened form and does not alter its structure with extended exposure to dry air. In the unripened form, however, FeCO₃ is unstable and quickly decomposes into Fe₂O₃ in air. These results are applied to the XPS analysis of films on actual specimens exposed to CO₂ corrosion in an experimental flow loop.

Original language	English (US)
Pages (from-to)	1231-1243
Number of pages	13
Journal	Corrosion Science
Volume	41
Issue number	7
DOIs	https://doi.org/10.1016/S0010-938X(98)00180-2
State	Published - Jul 1 1999

Keywords

Iron carbonate
Mild steel (A)
Oxidation (C)
Passive films (C)
XPS (B)

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

Online availability

10.1016/S0010-938X(98)00180-2

Library availability

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Cite this

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title = "An XPS characterization of FeCO3 films from CO2 corrosion",

abstract = "The objective of this study was to systematically characterize iron carbonate (FeCO3) using X-ray photoelectron spectroscopy (XPS) to aid in the identification of potentially passive films on specimens exposed to carbon dioxide (CO2) corrosion. To achieve this, an FeCO3 precipitate was prepared in a chemical reactor under anaerobic conditions and Ostwald ripened for 48 hours at 75°C. Its characteristic binding energies were determined, and its decomposition and oxidation behavior were studied. The examination revealed that FeCO3 is stable in the ripened form and does not alter its structure with extended exposure to dry air. In the unripened form, however, FeCO3 is unstable and quickly decomposes into Fe2O3 in air. These results are applied to the XPS analysis of films on actual specimens exposed to CO2 corrosion in an experimental flow loop.",

keywords = "Iron carbonate, Mild steel (A), Oxidation (C), Passive films (C), XPS (B)",

author = "Heuer, {J. K.} and Stubbins, {J. F.}",

note = "Funding Information: This work was supported by the industrial members of the NSF I/UCRC Corrosion in Multiphase Systems Center. XPS analysis was performed at the University of Illinois at the Center for Microanalysis of Materials which is funded by the Department of Energy. Special thanks go to R. Haasch for providing consultation with XPS analysis. The corrosion coupons examined were exposed in the high pressure horizontal multiphase flow loop at Ohio University by S. Bhongale and A. Vuppu under the direction of W.P. Jepson.",

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AU - Stubbins, J. F.

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PY - 1999/7/1

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N2 - The objective of this study was to systematically characterize iron carbonate (FeCO3) using X-ray photoelectron spectroscopy (XPS) to aid in the identification of potentially passive films on specimens exposed to carbon dioxide (CO2) corrosion. To achieve this, an FeCO3 precipitate was prepared in a chemical reactor under anaerobic conditions and Ostwald ripened for 48 hours at 75°C. Its characteristic binding energies were determined, and its decomposition and oxidation behavior were studied. The examination revealed that FeCO3 is stable in the ripened form and does not alter its structure with extended exposure to dry air. In the unripened form, however, FeCO3 is unstable and quickly decomposes into Fe2O3 in air. These results are applied to the XPS analysis of films on actual specimens exposed to CO2 corrosion in an experimental flow loop.

AB - The objective of this study was to systematically characterize iron carbonate (FeCO3) using X-ray photoelectron spectroscopy (XPS) to aid in the identification of potentially passive films on specimens exposed to carbon dioxide (CO2) corrosion. To achieve this, an FeCO3 precipitate was prepared in a chemical reactor under anaerobic conditions and Ostwald ripened for 48 hours at 75°C. Its characteristic binding energies were determined, and its decomposition and oxidation behavior were studied. The examination revealed that FeCO3 is stable in the ripened form and does not alter its structure with extended exposure to dry air. In the unripened form, however, FeCO3 is unstable and quickly decomposes into Fe2O3 in air. These results are applied to the XPS analysis of films on actual specimens exposed to CO2 corrosion in an experimental flow loop.

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