Erosion-Corrosion behavior of 2507 duplex stainless steel was studied in a CO2 saturated environment (sweet production) as it was impinged by CaCO3 and sand particles. Experimental data were collected with the objective of investigating the performance of 2507 duplex stainless steel on mitigating CO2 corrosion in erosive environments. Pure erosion, pure corrosion and erosion-corrosion tests were conducted in a flow loop with a direct impingement configuration. Weight loss (WL) and electrochemical linear polarization (LPR) methods were utilized in this study. While WL method was used to measure erosion and total erosion-corrosion, LPR was used to measure pure corrosion and to monitor corrosion part of total erosion-corrosion. The erosivites of particles were characterized at low and high flow velocities. The flowing solution’s pH was monitored and maintained in the range from 4 to 5 throughout corrosion and erosion-corrosion tests. For the experimental conditions considered, pure erosion and erosion-corrosion data showed no synergism between erosion and corrosion.

Subject
Solid particles, Flow loop, Sand, Corrosion rate, Flow velocity, Pure erosion, Penetration, Weight loss, Erosion, Steel, Corrosion data, Erosion corrosion, Linear polarization resistance
Keywords:
Corrosion Resistance Alloys (CRAs), duplex stainless steel, CO2 corrosion, erosion, erosion-corrosion, sand, calcium carbonate (CaCO3)
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2023
Association for Materials Protection and Performance (AMPP)
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