Electrochemical corrosion behavior of X-65 steel in the simulated oil sand slurry. I. Effects of hydrodynamic condition

摘要: Oil sand slurry hydrotransport pipelines are experiencing serious corrosion and erosion. In this work, rotating disk electrode technique was used to study the effects of fluid hydrodynamics on X-65 steel in simulated oil by potentiodynamic polarization curve electrochemical impedance spectroscopy measurements. absence sands, cathodic current increases with increasing speed due accelerated oxygen diffusion reduction. However, anodic decreases because improved oxidation steel. Although diffusivity temperature, resultant is not sufficient offset enhanced reactivity at an elevated temperature. The presence oils believed form a layer oily phase surface, facilitating reduction inhibiting dissolution With content size solution, enhanced.