High-Temperature Corrosion Behavior of Heat-Resistant Alloys in Atmosphere Containing Water Vapor and Ammonia

High-Temperature Corrosion Behavior of Heat-Resistant Alloys in Atmosphere Containing Water Vapor and Ammonia | 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 High-Temperature Corrosion Behavior of Heat-Resistant Alloys in Atmosphere Containing Water Vapor and Ammonia Suzue Yoneda, Shigenari Hayashi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7595565/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 20 Dec, 2025 Read the published version in High Temperature Corrosion of Materials → Version 1 posted 11 You are reading this latest preprint version Abstract Various chromia-forming alloys were exposed to atmospheres of Ar-10%H 2 O and Ar-10%H 2 O-2.5%NH 3 at 800°C. Protective Cr 2 O 3 scale formed on SUS310S and Inconel 718 in both atmospheres, and no nitride formation was observed. However, the high-temperature corrosion resistance of Alloy 800H substantially decreased in Ar-10%H 2 O-2.5%NH 3 compared with in Ar-10%H 2 O, and internal oxide and thick internal nitride layers formed, despite the initial formation of Cr 2 O 3 scale. These results suggest that the nitrogen permeability through Cr 2 O 3 scale may depend on the alloy substrate. In Inconel 718, CrNbO 4 layers formed beneath the Cr 2 O 3 scale, indicating that this layer may also act as a nitrogen diffusion barrier. In Alloy 800H, because the initially formed Cr 2 O 3 scale did not suppress the nitrogen diffusion, an internal nitride layer formed beneath the Cr 2 O 3 scale, resulting in the breakaway of the Cr 2 O 3 scale and severe internal oxidation and nitridation. high-temperature corrosion ammonia nitridation Cr2O3-forming alloy Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 20 Dec, 2025 Read the published version in High Temperature Corrosion of Materials → Version 1 posted Editorial decision: Revision requested 12 Oct, 2025 Reviews received at journal 12 Oct, 2025 Reviews received at journal 12 Oct, 2025 Reviews received at journal 03 Oct, 2025 Reviewers agreed at journal 21 Sep, 2025 Reviewers agreed at journal 18 Sep, 2025 Reviewers agreed at journal 16 Sep, 2025 Reviewers invited by journal 16 Sep, 2025 Editor assigned by journal 12 Sep, 2025 Submission checks completed at journal 12 Sep, 2025 First submitted to journal 11 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. 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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-7595565","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":518285498,"identity":"07bc3bd9-8563-44b1-a0f0-061057807479","order_by":0,"name":"Suzue 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Ammonia","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":"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":"high-temperature corrosion, ammonia, nitridation, Cr2O3-forming alloy","lastPublishedDoi":"10.21203/rs.3.rs-7595565/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7595565/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eVarious chromia-forming alloys were exposed to atmospheres of Ar-10%H\u003csub\u003e2\u003c/sub\u003eO and Ar-10%H\u003csub\u003e2\u003c/sub\u003eO-2.5%NH\u003csub\u003e3\u003c/sub\u003e at 800\u0026deg;C. Protective Cr\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e3\u003c/sub\u003e scale formed on SUS310S and Inconel 718 in both atmospheres, and no nitride formation was observed. However, the high-temperature corrosion resistance of Alloy 800H substantially decreased in Ar-10%H\u003csub\u003e2\u003c/sub\u003eO-2.5%NH\u003csub\u003e3\u003c/sub\u003e compared with in Ar-10%H\u003csub\u003e2\u003c/sub\u003eO, and internal oxide and thick internal nitride layers formed, despite the initial formation of Cr\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e3\u003c/sub\u003e scale. These results suggest that the nitrogen permeability through Cr\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e3\u003c/sub\u003e scale may depend on the alloy substrate. In Inconel 718, CrNbO\u003csub\u003e4\u003c/sub\u003e layers formed beneath the Cr\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e3\u003c/sub\u003e scale, indicating that this layer may also act as a nitrogen diffusion barrier. In Alloy 800H, because the initially formed Cr\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e3\u003c/sub\u003e scale did not suppress the nitrogen diffusion, an internal nitride layer formed beneath the Cr\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e3\u003c/sub\u003e scale, resulting in the breakaway of the Cr\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e3\u003c/sub\u003e scale and severe internal oxidation and nitridation.\u003c/p\u003e","manuscriptTitle":"High-Temperature Corrosion Behavior of Heat-Resistant Alloys in Atmosphere Containing Water Vapor and Ammonia","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-09-25 11:05:09","doi":"10.21203/rs.3.rs-7595565/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2025-10-13T01:17:24+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-10-12T14:00:17+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-10-12T09:17:00+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-10-03T07:59:41+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"259244299103358174989710924599389059593","date":"2025-09-21T15:06:58+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"28118217245472487244102383113608148104","date":"2025-09-18T05:18:20+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"322730471643693034963368356023387800262","date":"2025-09-17T01:44:00+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-09-17T01:20:57+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-09-12T13:40:12+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2025-09-12T13:39:48+00:00","index":"","fulltext":""},{"type":"submitted","content":"High Temperature Corrosion of Materials","date":"2025-09-12T01:50:23+00:00","index":"","fulltext":""}],"status":"published","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}}],"origin":"","ownerIdentity":"7304e804-4c05-4ff6-bed0-767a8c7c46b2","owner":[],"postedDate":"September 25th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[],"tags":[],"updatedAt":"2025-12-22T15:59:59+00:00","versionOfRecord":{"articleIdentity":"rs-7595565","link":"https://doi.org/10.1007/s11085-025-10364-0","journal":{"identity":"high-temperature-corrosion-of-materials","isVorOnly":false,"title":"High Temperature Corrosion of Materials"},"publishedOn":"2025-12-20 15:57:20","publishedOnDateReadable":"December 20th, 2025"},"versionCreatedAt":"2025-09-25 11:05:09","video":"","vorDoi":"10.1007/s11085-025-10364-0","vorDoiUrl":"https://doi.org/10.1007/s11085-025-10364-0","workflowStages":[]},"version":"v1","identity":"rs-7595565","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7595565","identity":"rs-7595565","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}