The performance of API-5L-X65 carbon steel in saturated-CO2 erosion-corrosion environments was studied using a Box–Benhnken design of experiments with three important variables (sand loading, velocity and corrosion inhibitor), which affect the performance of material in a flowing environment as has been widely reported. Those variables were studied at low, intermediate and high level, referred to in this study as -1, 0, and +1 respectively. This methodology not only allows assessment of each effect on the total erosion-corrosion damage, here referred to as the total weight loss (TWL) to be determined but also the interaction of those parameters on the damage caused by erosion-corrosion and their interaction. Post surface analysis using SEM was conducted to enable the degradation mechanisms to be described.

Subject
Materials, Sand, Flow velocity, Stress, Constants, Surface analysis, Corrosion modeling, Weight loss, Impact velocity, Corrosion inhibitors, Erosion, Carbon steel, Erosion corrosion
Keywords:
Total weight loss, sand loading, velocity, corrosion inhibitor, current density
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2011
Association for Materials Protection and Performance (AMPP)
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