Materials Research · 2015 · 22 citations · 10 references
Natural SciencesMaterials EngineeringMaterials ScienceCorrosion ScienceMetallurgySurface EngineeringCorrosion EngineeringCorrosion EvaluationCorrosion KineticsCorrosion Of SteelsCorrosion ResistanceCorrosion TestingCarbon Dioxide CorrosionCarbon Steel CorrosionCo2 CorrosionCorrosion Under Flow ConditionsLow-carbon SteelShear StressSurface Roughness Effects On CorrosionSurface Roughness Parameters
This paper discusses the influence of the flow of a fluid from the static regime to the turbulent in CO 2 corrosion experienced by low carbon steel. A more comprehensive approach to CO 2 corrosion implies taking the free flowing velocity and shear stress of the fluid and the surface roughness of the material into consideration. Low carbon steel samples in two different superficial finish conditions were used as the rotating cylinder electrode. The corrosion rate were determined by linear polarization at 25 C in a 0.5 mol/L NaHCO 3 solution purged with CO 2 at 1 atm pressure in pH 7.5. The effect of superficial finish on CO 2 corrosion in flow conditions was studied. The results obtained showed that the corrosion rate increases with flow velocity and is influenced by surface roughness.
10