Corrosion of carbon steel under CO2 conditions: Effect of CaCO3 precipitation on the stability of the FeCO3 protective layer

Riccardo Rizzo*, Shivangi Gupta, Magdalena Rogowska, Rajan Ambat

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

This study investigates the effect of CaCO3 precipitation on the corrosion of 1Cr carbon steel covered by protective FeCO3 layer. Tests were conducted at atmospheric pressure in 1 wt.% NaCl solution saturated with CO2 at 80 °C. Three different concentrations of Ca2+ (100, 1,000 and 10,000 ppm by mass) were studied. Linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization were used to investigate the electrochemical behavior. Scanning electron microscopy (SEM) and X-ray powder diffraction (XRD) were used to analyze the corrosion products. Results suggested the precipitation of CaCO3 led to an undersaturated solution with respect to FeCO3 followed by dissolution of the protective layer.

Original languageEnglish
Article number108214
JournalCorrosion science
Volume162
Number of pages12
ISSN0010-938X
DOIs
Publication statusPublished - 2020

Keywords

  • Carbon steel A
  • EIS B
  • Interfaces C
  • Oxidation C
  • Polarization B

Cite this

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title = "Corrosion of carbon steel under CO2 conditions: Effect of CaCO3 precipitation on the stability of the FeCO3 protective layer",
abstract = "This study investigates the effect of CaCO3 precipitation on the corrosion of 1Cr carbon steel covered by protective FeCO3 layer. Tests were conducted at atmospheric pressure in 1 wt.{\%} NaCl solution saturated with CO2 at 80 °C. Three different concentrations of Ca2+ (100, 1,000 and 10,000 ppm by mass) were studied. Linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization were used to investigate the electrochemical behavior. Scanning electron microscopy (SEM) and X-ray powder diffraction (XRD) were used to analyze the corrosion products. Results suggested the precipitation of CaCO3 led to an undersaturated solution with respect to FeCO3 followed by dissolution of the protective layer.",
keywords = "Carbon steel A, EIS B, Interfaces C, Oxidation C, Polarization B",
author = "Riccardo Rizzo and Shivangi Gupta and Magdalena Rogowska and Rajan Ambat",
year = "2020",
doi = "10.1016/j.corsci.2019.108214",
language = "English",
volume = "162",
journal = "Corrosion Science",
issn = "0010-938X",
publisher = "Pergamon Press",

}

Corrosion of carbon steel under CO2 conditions: Effect of CaCO3 precipitation on the stability of the FeCO3 protective layer. / Rizzo, Riccardo; Gupta, Shivangi; Rogowska, Magdalena; Ambat, Rajan.

In: Corrosion science, Vol. 162, 108214, 2020.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Corrosion of carbon steel under CO2 conditions: Effect of CaCO3 precipitation on the stability of the FeCO3 protective layer

AU - Rizzo, Riccardo

AU - Gupta, Shivangi

AU - Rogowska, Magdalena

AU - Ambat, Rajan

PY - 2020

Y1 - 2020

N2 - This study investigates the effect of CaCO3 precipitation on the corrosion of 1Cr carbon steel covered by protective FeCO3 layer. Tests were conducted at atmospheric pressure in 1 wt.% NaCl solution saturated with CO2 at 80 °C. Three different concentrations of Ca2+ (100, 1,000 and 10,000 ppm by mass) were studied. Linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization were used to investigate the electrochemical behavior. Scanning electron microscopy (SEM) and X-ray powder diffraction (XRD) were used to analyze the corrosion products. Results suggested the precipitation of CaCO3 led to an undersaturated solution with respect to FeCO3 followed by dissolution of the protective layer.

AB - This study investigates the effect of CaCO3 precipitation on the corrosion of 1Cr carbon steel covered by protective FeCO3 layer. Tests were conducted at atmospheric pressure in 1 wt.% NaCl solution saturated with CO2 at 80 °C. Three different concentrations of Ca2+ (100, 1,000 and 10,000 ppm by mass) were studied. Linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization were used to investigate the electrochemical behavior. Scanning electron microscopy (SEM) and X-ray powder diffraction (XRD) were used to analyze the corrosion products. Results suggested the precipitation of CaCO3 led to an undersaturated solution with respect to FeCO3 followed by dissolution of the protective layer.

KW - Carbon steel A

KW - EIS B

KW - Interfaces C

KW - Oxidation C

KW - Polarization B

U2 - 10.1016/j.corsci.2019.108214

DO - 10.1016/j.corsci.2019.108214

M3 - Journal article

VL - 162

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

M1 - 108214

ER -