Excellent mechanical properties obtained in Si3N4/Cu joint with a network structure via brazing with AgCuTi/porous Cu foam/AgCuTi sandwich composite filler

Excellent mechanical properties obtained in Si3N4/Cu joint with a network structure via brazing with AgCuTi/porous Cu foam/AgCuTi sandwich composite filler | 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 Excellent mechanical properties obtained in Si3N4/Cu joint with a network structure via brazing with AgCuTi/porous Cu foam/AgCuTi sandwich composite filler Ying Wang, Wei Feng, Ruizhi Zhang, Ruxia Liu, Yong Xiao, Guoqiang Luo, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5454502/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 5 You are reading this latest preprint version Abstract AgCuTi/porous Cu foam/AgCuTi sandwich composite filler was used as the interlayer to enhance the brazing strength of the Si 3 N 4 /Cu joints. The typical microstructure of the joint brazed with the sandwich composite filler at 880 ℃ was Si 3 N 4 /TiN/Ti 5 Si 3 + CuTi/Ag(s,s) + Cu(s,s)/Cu, where the Ag(s,s) + Cu(s,s) layer is an interpenetrating network structure. And the thickness of the TiN reaction layer increased from 0.58 µm to 1.28 µm when the thickness of the porous Cu foam layer increased from 100 µm to 300 µm. The Si 3 N 4 /Cu joint obtained with 300 µm porous Cu foam owned the highest shear strength of 121.7 MPa, which improved by 281% than that with the use of AgCuTi filler alone. Further EBSD analysis and finite element simulation revealed that the reduction in residual stress and the increase in plastic deformation effect induced by the Ag(s,s) + Cu(s,s) interpenetrating network structure are the key factor for the enhancement of the mechanical properties of this Si 3 N 4 /Cu joint brazed with AgCuTi/porous Cu foam/AgCuTi sandwich composite filler. Si3N4/Cu joints Brazing Composite filler skeleton structure Shear strength Full Text Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 03 Feb, 2025 Reviewers invited by journal 31 Jan, 2025 Editor invited by journal 15 Nov, 2024 Editor assigned by journal 15 Nov, 2024 First submitted to journal 14 Nov, 2024 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-5454502","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":409492331,"identity":"827ca660-13fc-46d0-8ac0-5bb768a90ed0","order_by":0,"name":"Ying Wang","email":"","orcid":"","institution":"Wuhan University of Technology","correspondingAuthor":false,"prefix":"","firstName":"Ying","middleName":"","lastName":"Wang","suffix":""},{"id":409492332,"identity":"819323f2-cf20-41c7-b03b-f409bf0bb049","order_by":1,"name":"Wei Feng","email":"","orcid":"","institution":"Wuhan University of 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The typical microstructure of the joint brazed with the sandwich composite filler at 880 ℃ was Si\u003csub\u003e3\u003c/sub\u003eN\u003csub\u003e4\u003c/sub\u003e/TiN/Ti\u003csub\u003e5\u003c/sub\u003eSi\u003csub\u003e3\u003c/sub\u003e\u0026thinsp;+\u0026thinsp;CuTi/Ag(s,s)\u0026thinsp;+\u0026thinsp;Cu(s,s)/Cu, where the Ag(s,s)\u0026thinsp;+\u0026thinsp;Cu(s,s) layer is an interpenetrating network structure. And the thickness of the TiN reaction layer increased from 0.58 \u0026micro;m to 1.28 \u0026micro;m when the thickness of the porous Cu foam layer increased from 100 \u0026micro;m to 300 \u0026micro;m. The Si\u003csub\u003e3\u003c/sub\u003eN\u003csub\u003e4\u003c/sub\u003e/Cu joint obtained with 300 \u0026micro;m porous Cu foam owned the highest shear strength of 121.7 MPa, which improved by 281% than that with the use of AgCuTi filler alone. Further EBSD analysis and finite element simulation revealed that the reduction in residual stress and the increase in plastic deformation effect induced by the Ag(s,s)\u0026thinsp;+\u0026thinsp;Cu(s,s) interpenetrating network structure are the key factor for the enhancement of the mechanical properties of this Si\u003csub\u003e3\u003c/sub\u003eN\u003csub\u003e4\u003c/sub\u003e/Cu joint brazed with AgCuTi/porous Cu foam/AgCuTi sandwich composite filler.\u003c/p\u003e","manuscriptTitle":"Excellent mechanical properties obtained in Si3N4/Cu joint with a network structure via brazing with AgCuTi/porous Cu foam/AgCuTi sandwich composite filler","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-02-03 18:31:34","doi":"10.21203/rs.3.rs-5454502/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"","date":"2025-02-03T16:09:38+00:00","index":0,"fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-01-31T10:28:10+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"Welding in the World","date":"2024-11-15T21:38:54+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2024-11-15T07:57:17+00:00","index":"","fulltext":""},{"type":"submitted","content":"Welding in the World","date":"2024-11-15T02:34:35+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"welding-in-the-world","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"witw","sideBox":"Learn more about [Welding in the World](https://www.springer.com/journal/40194)","snPcode":"40194","submissionUrl":"https://www.editorialmanager.com/witw/","title":"Welding in the World","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"aab50058-8db8-4c69-8489-26dada1d5a61","owner":[],"postedDate":"February 3rd, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2025-03-20T19:44:15+00:00","versionOfRecord":[],"versionCreatedAt":"2025-02-03 18:31:34","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-5454502","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-5454502","identity":"rs-5454502","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}