Effects and Degradation Pathways of NaCl-assisted Hot Corrosion of a 2nd Generation Ni-based Superalloy at 900 °C

Effects and Degradation Pathways of NaCl-assisted Hot Corrosion of a 2nd Generation Ni-based Superalloy at 900 °C | 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 Research Article Effects and Degradation Pathways of NaCl-assisted Hot Corrosion of a 2nd Generation Ni-based Superalloy at 900 °C Preston Nguyen, Doug Konitzer, Brian Gleeson This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9141292/v1 This work is licensed under a CC BY 4.0 License Status: Under Revision Version 1 posted 9 You are reading this latest preprint version Abstract The effect of adding NaCl to typical hot-corrosion deposits on a 2nd -generation Ni-based superalloy was studied. Mechanistic understanding was aided by conducting complementary tests of NaCl deposit on pure Ni. The degradation pathway for Ni deposited with NaCl was inferred by conducting a time study of short-term exposures to involve Ni dissolution, precipitation, and subsequent oxidation instead of the commonly posited active oxidation process. Such a degradation pathway is previously unreported, and it highlights the dynamic interplay of degradation mechanisms. The pathway for PWA 1429 with a NaCl deposit included the same initial Ni dissolution and precipitation pathway, while also including an active oxidation component due to the presence of Cr, Mo, or W additions. The results demonstrate that the consideration of NaCl is important to future Na 2 SO 4 testing due to the aggressive nature of NaCl, particularly in the early stages of degradation. NaCl-assisted NaCl-induced hot corrosion Ni-based superalloy Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Revision Version 1 posted Editorial decision: Revision requested 17 Apr, 2026 Reviews received at journal 17 Apr, 2026 Reviews received at journal 05 Apr, 2026 Reviewers agreed at journal 01 Apr, 2026 Reviewers agreed at journal 01 Apr, 2026 Reviewers invited by journal 01 Apr, 2026 Editor assigned by journal 24 Mar, 2026 Submission checks completed at journal 24 Mar, 2026 First submitted to journal 16 Mar, 2026 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. 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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-9141292","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":617754693,"identity":"00be5cd0-f144-4613-a81b-a8b970bef8a6","order_by":0,"name":"Preston Nguyen","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAApUlEQVRIiWNgGAWjYHACxgcfGCTALAlitTAbzmCQkOAhRQubNFA5CVrMJXIPSNvusKizZ2A+eJuHGC2WM/ISjHPPgBzGlmxNlBaDM2cMknPbQFp4zKSJ1nLYEqyF/xuRWo73GDYzQmxhI06LZXuPMWPvGQnJnsNsxpZziNFizsxj/uPnjjp+9vbmhzfeEOUwEMHYACSYiVGOqmUUjIJRMApGAS4AAAGKJutNGUD0AAAAAElFTkSuQmCC","orcid":"","institution":"University of Pittsburgh","correspondingAuthor":true,"prefix":"","firstName":"Preston","middleName":"","lastName":"Nguyen","suffix":""},{"id":617754694,"identity":"f0920b63-7a65-4402-a857-ca4421af418d","order_by":1,"name":"Doug Konitzer","email":"","orcid":"","institution":"University of Pittsburgh","correspondingAuthor":false,"prefix":"","firstName":"Doug","middleName":"","lastName":"Konitzer","suffix":""},{"id":617754695,"identity":"d6c5e60a-937e-4d75-805b-b9571d3900dc","order_by":2,"name":"Brian Gleeson","email":"","orcid":"","institution":"University of Pittsburgh","correspondingAuthor":false,"prefix":"","firstName":"Brian","middleName":"","lastName":"Gleeson","suffix":""}],"badges":[],"createdAt":"2026-03-16 19:09:28","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-9141292/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-9141292/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":106356850,"identity":"1c7e8304-ac27-4176-b78e-7f2776cd8339","added_by":"auto","created_at":"2026-04-07 18:56:33","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":886933,"visible":true,"origin":"","legend":"","description":"","filename":"EffectsandDegradationPathwaysofNaClassistedHotCorrosionNoFieldCodesV3.pdf","url":"https://assets-eu.researchsquare.com/files/rs-9141292/v1_covered_be85cb44-14de-4121-afa4-9a2fce259a21.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Effects and Degradation Pathways of NaCl-assisted Hot Corrosion of a 2nd Generation Ni-based Superalloy at 900 °C","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"high-temperature-corrosion-of-materials","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"Learn more about [High Temperature Corrosion of Materials](https://www.springer.com/journal/11085)","snPcode":"11085","submissionUrl":"https://submission.nature.com/new-submission/11085/3","title":"High Temperature Corrosion of Materials","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"NaCl-assisted, NaCl-induced, hot corrosion, Ni-based superalloy","lastPublishedDoi":"10.21203/rs.3.rs-9141292/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-9141292/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe effect of adding NaCl to typical hot-corrosion deposits on a 2nd -generation Ni-based superalloy was studied. 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