Corrosion behaviour of Cr13 steel in CO₂ saturated brine with high chloride concentration

Abstract

Abstract The corrosion behaviour of martensitic stainless injection‐pipeline steel X46Cr13 exposed to CO 2 saturated artificial saline brine with high chloride concentration similar to onshore CCS‐site at Ketzin, Germany has been investigated by means of electrochemical technique and microscopic observations at short exposure times (up to 24 h) and by mass loss and metallographic observations at exposure times up to 17520 h. Pitting corrosion kinetics has been characterised and the predictions about the corrosion mechanism are made.