Parametric Study of the Corrosion of API-5L-X65 QT Steel Using Potentiostat Based Measurements in a Flow Loop
Source abstract
Abstract
Low-carbon steel is widely used in industrial pipelines, and corrosion studies are focused mostly on erosion-corrosion, its prediction and control. In this paper, the corrosion rate in pipelines is modeled using a flow loop and measured by linear polarization resistance method (LPR) using a 3-electrode corrosion setup for API-5L-X65 QT steel. Optical microscopy and SEM studies are conducted to examine the surface of the sample and the corrosion products. The effect of NaCl concentration on the corrosion rate is studied at different pH, temperature range, and flow velocities with dissolved oxygen content in the solution maintained at 6 mg/L (6ppm). The corrosion rate is found to be varying from 1 mil per year (0.0254 mmyr−1) to 10 mils per year (0.254 mmyr−1), and the corrosion rate increases with the flow velocity and reaches a maximum at Reynolds Number above 10,000. Further increase in fluid velocity shows corrosion is flow insensitive, and uniform corrosion is predominant in the region.
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Research context
OpenAlex topics: Non-Destructive Testing Techniques · Erosion and Abrasive Machining · Metallurgical Processes and Thermodynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Mechanical Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, UAE
Centre for Defense Chemistry, Cranfield University, Defense Academy of the United Kingdom, Shrivenham SN6 8LA, UK
Department of Mechanical Engineering, University of Alaska, Anchorage, 3310 UAA Drive, ECB 301, Anchorage, AK 99508, USA
Funding
Khalifa University of Science, Technology and Research
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