Effects of sulphide ion on the corrosion behaviour of X52 steel in a carbon dioxide environment at temperature 40 °C

► We study the effect of sulphide ion on the corrosion behaviour of X52 steel. ► Increasing sulphide ion concentration will increase the corrosion rate of X52 steel. ► Increasing sulphide ion concentration will increase cathodic reaction. ► Less protective film, also contribute to the increasing the corrosion rate.