Abstract
The corrosion of carbon steel in contact with synthetic calcareous natural waters containing sulphate ions was investigated. Since the diffusion process is a determining factor in the corrosion kinetics through the reduction of dissolved oxygen, use was made of a rotating disc electrode. The development of the open circuit corrosion potential showed two distinct time domains indicating two corrosion processes: one at the bare electrode and another at the accumulation of corrosion products. Electrochemical impedance spectroscopy measurements at the open circuit potential allowed study of three main phenomena relating to the corrosion of mild steel and the influence of sulphate ions: (i) the formation of a poorly protective surface layer, the double layer capacitance indicating the accumulation of corrosion products; (ii) the charge transfer resistance, allowing evaluation of the corrosion rate; and (iii) mass transport processes through the hydrodynamic layer in the vicinity of the electrode surface, and through the corrosion products.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
