Membrane-coated electrochemical probe for corrosion measurements of high strength carbon steel in supercritical CO2

Justin Beck, Mark Valentinovich Fedkin, Serguei Lvov, Margaret Ziomek-Moroz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Growing interest in transporting supercritical carbon dioxide (scCO2) for enhanced oil recovery and carbon capture and storage has led to an increased interest in the corrosion behavior of pipeline steels in scCO2 fluids with varying levels of water contamination. Electrochemical measurements in scCO2 fluids have been limited by the very low solution conductivity, even in fluids saturated with water vapor. Electrochemical corrosion measurements using linear polarization resistance, electrochemical impedance spectroscopy, and electrochemical frequency modulation are presented here for X65 carbon steel in supercritical carbon dioxide contaminated with water vapor. The low solution conductivity was overcome using a coating of ion conducting polymer over the corrosion probe. The results showed that increasing membrane thickness resulted in reductions to both charge transfer and mass transfer rates. It is proposed here that this behavior was a result of the thickness of the aqueous film varying with the membrane thickness. Improving the process of applying the membrane could allow electrochemical corrosion measurements to be performed in low-conductivity environments with respect to varying thicknesses of the aqueous film.

Original languageEnglish (US)
Title of host publicationNACE International - Corrosion 2013 Conference and Expo
StatePublished - Sep 18 2013
EventCorrosion 2013 - Orlando, FL, United States
Duration: Mar 17 2013Mar 21 2013

Publication series

NameNACE - International Corrosion Conference Series
ISSN (Print)0361-4409

Other

OtherCorrosion 2013
CountryUnited States
CityOrlando, FL
Period3/17/133/21/13

All Science Journal Classification (ASJC) codes

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

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  • Cite this

    Beck, J., Fedkin, M. V., Lvov, S., & Ziomek-Moroz, M. (2013). Membrane-coated electrochemical probe for corrosion measurements of high strength carbon steel in supercritical CO2. In NACE International - Corrosion 2013 Conference and Expo (NACE - International Corrosion Conference Series).