Corrosion Behavior of Conductor Materials under Various DC Electric-Field Strengths in Simulated Marine Atmospheres

Corrosion Behavior of Conductor Materials under Various DC Electric-Field Strengths in Simulated Marine Atmospheres | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Corrosion Behavior of Conductor Materials under Various DC Electric-Field Strengths in Simulated Marine Atmospheres Hongxia Wan, Lin Geng, Wenlu Min, Yi Liu, Ya Li, Jinling Xiong, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7713381/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 9 You are reading this latest preprint version Abstract Severe corrosion of high-voltage transmission lines in marine atmospheric environment is observed, significantly impacting the safety of power systems. This study systematically investigated the corrosion of Cu and Al alloy conductors under various DC electric-field strengths in high-humidity and chloride-containing environments. Electrochemical tests, corrosion products analysis, and morphological characterization collectively revealed that for both Cu and Al alloy materials, corrosion was minimal in the absence of an electric field, but the amount of surface corrosion products significantly increased upon application of an electric field. Electrochemical impedance spectroscopy reveals a decrease in charge transfer resistance as the electric field strength increases. Similarly, polarization curve analysis demonstrates a corresponding increase in corrosion current density with rising field strength. Further corrosion products analysis confirmed that the corrosion products of Cu is Cu 2 O, CuO, Cu 2 (OH) 2 CO 3 and the corrosion products of Al alloy is AlO(OH), Al 2 O 3 . Moreover, pitting corrosion pit statistics indicated that at 400 kV/m, the maximum pitting corrosion depths for Cu and Al alloy were 2-3 times greater than those observed in the absence of an electric field. The overall corrosion rate of both materials exhibited a consistent increase with rising electric field strength. The electric field accelerates chloride-ion migration through the thin liquid film, facilitating film breakdown and localised corrosion. High-voltage electric field Conductor materials Thin electrolyte layer Atmospheric corrosion Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Reviews received at journal 14 Oct, 2025 Reviews received at journal 09 Oct, 2025 Reviewers agreed at journal 09 Oct, 2025 Reviewers agreed at journal 30 Sep, 2025 Reviewers agreed at journal 30 Sep, 2025 Reviewers invited by journal 30 Sep, 2025 Editor assigned by journal 26 Sep, 2025 Submission checks completed at journal 26 Sep, 2025 First submitted to journal 25 Sep, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7713381","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":526979000,"identity":"13e2bb23-fc5c-479f-a30c-3ae4233cda3a","order_by":0,"name":"Hongxia Wan","email":"","orcid":"","institution":"China University of Petroleum, Beijing","correspondingAuthor":false,"prefix":"","firstName":"Hongxia","middleName":"","lastName":"Wan","suffix":""},{"id":526979002,"identity":"89ad5d5f-c2ca-4096-be17-aac563b0cb6f","order_by":1,"name":"Lin Geng","email":"","orcid":"","institution":"China University of Petroleum, 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Marine Atmospheres","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"surface-science-and-technology","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"Learn more about [Surface Science and Technology](https://link.springer.com/journal/44251)","snPcode":"44251","submissionUrl":"https://submission.springernature.com/new-submission/44251/3","title":"Surface Science and Technology","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Springer Open","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"High-voltage electric field, Conductor materials, Thin electrolyte layer, Atmospheric corrosion","lastPublishedDoi":"10.21203/rs.3.rs-7713381/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7713381/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eSevere corrosion of high-voltage transmission lines in marine atmospheric environment is observed, significantly impacting the safety of power systems. This study systematically investigated the corrosion of Cu and Al alloy conductors under various DC electric-field strengths in high-humidity and chloride-containing environments. Electrochemical tests, corrosion products analysis, and morphological characterization collectively revealed that for both Cu and Al alloy materials, corrosion was minimal in the absence of an electric field, but the amount of surface corrosion products significantly increased upon application of an electric field. Electrochemical impedance spectroscopy reveals a decrease in charge transfer resistance as the electric field strength increases. Similarly, polarization curve analysis demonstrates a corresponding increase in corrosion current density with rising field strength. Further corrosion products analysis confirmed that the corrosion products of Cu is Cu\u003csub\u003e2\u003c/sub\u003eO, CuO, Cu\u003csub\u003e2\u003c/sub\u003e(OH)\u003csub\u003e2\u003c/sub\u003eCO\u003csub\u003e3\u003c/sub\u003e and the corrosion products of Al alloy is AlO(OH), Al\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e3\u003c/sub\u003e. Moreover, pitting corrosion pit statistics indicated that at 400 kV/m, the maximum pitting corrosion depths for Cu and Al alloy were 2-3 times greater than those observed in the absence of an electric field. The overall corrosion rate of both materials exhibited a consistent increase with rising electric field strength. The electric field accelerates chloride-ion migration through the thin liquid film, facilitating film breakdown and localised corrosion.\u003c/p\u003e","manuscriptTitle":"Corrosion Behavior of Conductor Materials under Various DC Electric-Field Strengths in Simulated Marine Atmospheres","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-10-13 16:27:14","doi":"10.21203/rs.3.rs-7713381/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"editorInvitedReview","content":"","date":"2025-10-15T02:48:41+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-10-09T08:38:43+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"176801327310452945461967752960341850692","date":"2025-10-09T08:00:12+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"331496346054369164795041132536229910149","date":"2025-10-01T01:57:27+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"335357062891594527745783320700914445280","date":"2025-09-30T14:33:07+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-09-30T09:10:17+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-09-26T14:08:19+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2025-09-26T14:08:01+00:00","index":"","fulltext":""},{"type":"submitted","content":"Surface Science and Technology","date":"2025-09-25T13:14:28+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"surface-science-and-technology","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"Learn more about [Surface Science and Technology](https://link.springer.com/journal/44251)","snPcode":"44251","submissionUrl":"https://submission.springernature.com/new-submission/44251/3","title":"Surface Science and Technology","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Springer Open","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"63740087-f6a5-4d63-a749-68e907d44001","owner":[],"postedDate":"October 13th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2025-11-18T13:39:12+00:00","versionOfRecord":[],"versionCreatedAt":"2025-10-13 16:27:14","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7713381","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7713381","identity":"rs-7713381","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}