Abstract
Many oil and gas pipelines are parallel with high voltage transmission lines in a long distance. Corrosion failures in such situation have been reported and typical corrosion morphology (stone-hard-soil) have found in these failures. In this paper, AC corrosion behavior and the effects on corrosion process after the formation of typical corrosion morphology are investigated in earth alkaline rich environment through laboratory simulated tests. This study produce a corrosion rate map where high CP AC corrosion and local corrosion are observed. In domain of high CP AC corrosion, local environment, including typical morphology of stone-hard-soil and corrosive electrolyte at interface, are analyzed. After the formation of stone-hard-soil, the electric field and its effects on migration of Cl-, are discussed. These results, combining the changes in instantaneous potential and pH at local regions, provide a guide to understand the occurrence and development of local corrosion under high CP level and AC interference.
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.
