CORROSION · 1987 · 17 citations · 5 references
Natural SciencesMaterials EngineeringMaterials ScienceCorrosion ScienceElectrochemistryMetallurgyCorrosion EngineeringCorrosion MechanismsCorrosion Of SteelsCorrosion TestingCorrosion-resistant MaterialsStress Corrosion CrackingAc Impedance AnalysisAnodic PolarizationFlow-assisted CorrosionIntergranular Stress Corrosion CrackingRepassivationRepassivation KineticsStainless Steel CorrosionStress Corrosion Cracking Kinetics
The effect of fluid flow on stress corrosion cracking of sensitized AISI 304 stainless steel has been studied in air-saturated and deaerated 0.01 M Na2SO4 solution under open circuit conditions and at an applied potential of −10 mVSHE, respectively, at 250 C, using slow strain rate tensile tests. This work has demonstrated that in both conditions the time to failure increases with increasing fluid flow velocity. Repassivation, AC impedance and anodic polarization curve measurements have shown that the increased time to failure results from an increased repassivation rate of the alloy and from improved protective properties of the oxide film in the flowing solution.
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