The Effects of Cr/Mo Micro-Alloying on the Corrosion Behavior of Carbon Steel in CO2-Saturated (Sweet) Brine under Hydrodynamic Control
| Autor: | M Hassan Sk, David E. Williams, N Laycock, Aboubakr M. Abdullah, Mary P. Ryan, Jiahui Qi, Bridget Ingham, Monika Ko |
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| Přispěvatelé: | Qatar Shell Research and Technology Center QSTP LLC, Shell Global Solutions International BV |
| Rok vydání: | 2018 |
| Předmět: |
Technology
Materials science PIPELINE STEELS Carbon steel 0306 Physical Chemistry (Incl. Structural) FLOW 020209 energy Materials Science chemistry.chemical_element 02 engineering and technology engineering.material Electrochemistry law.invention Chromium X-RAY-DIFFRACTION CO2 CORROSION Materials Science Coatings & Films CHROMIUM law 0202 electrical engineering electronic engineering information engineering Materials Chemistry Crystallization 0912 Materials Engineering Corrosion behavior DIOXIDE CORROSION Science & Technology Energy ELECTRODE Renewable Energy Sustainability and the Environment Metallurgy 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Surfaces Coatings and Films Electronic Optical and Magnetic Materials Brine chemistry Physical Sciences engineering MICROSTRUCTURE CRYSTALLIZATION 0210 nano-technology CR 0303 Macromolecular And Materials Chemistry |
| Zdroj: | C288 C278 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/2.1011805jes |
| Popis: | The effects of micro-alloying of plain carbon steel with Cr and Mo on the corrosion behavior in CO2-saturated (sweet) brine (0.5 M NaCl, pH 6.6) environment, under hydrodynamic conditions, at 80◦C were investigated. Crystalline siderite/chukanovite scales formed on all the alloys. Analysis of potentiostatic current transient data suggest that there exists a synergistic interaction between Cr and Mo, which induces more rapid crystallization of the scale compared to Mo-free steels. Increasing the Mo content also suppressed the transport-dependent dissolution current passing through the initially-present amorphous surface film. TEM images of the FIB-sectioned corrosion scales confirm that the corrosion scale formed on 1Cr0.7Mo is comparatively thinner and yet offers greater protectiveness when compared to the plain carbon steel. |
| Databáze: | OpenAIRE |
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