Effect of hydrogen embrittlement on the adhesion strength and wear resistance of DLC-coated 316L stainless steel for application in hydrogen valves of FCEVs

Effect of hydrogen embrittlement on the adhesion strength and wear resistance of DLC-coated 316L stainless steel for application in hydrogen valves of FCEVs | 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 Effect of hydrogen embrittlement on the adhesion strength and wear resistance of DLC-coated 316L stainless steel for application in hydrogen valves of FCEVs Seong-Jong Kim, Dong-Ho Shin This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3805911/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 04 May, 2024 Read the published version in npj Materials Degradation → Version 1 posted 9 You are reading this latest preprint version Abstract Diamond-like carbon (DLC) coating is a surface coating technology with excellent hydrogen permeation resistance and wear resistance. However, it is difficult to completely prevent hydrogen permeation, and when hydrogen penetrates into the coating layer, the DLC coating is adversely affected. Therefore, we investigated the effect of hydrogen embrittlment on the adhesion strength and wear resistance of the DLC coating layer. As the results of the research, the surface roughness of the DLC coating was increased by a maximum of 3.8 times with hydrogen charging, and the delamination ratio of the DLC coating reached about 58%. In addition, the Lc3, which refers to the adhesion strength corresponding to the complete delamination of the DLC coating, was decreased by a maximum of 2.0 N due to hydrogen permeation. In addition, the wear resistance decreased due to hydrogen permeation, and the exposed width of the substrate due to wear increased by more than 4 times. It was also determined that hydrogen blistering or hydrogen-induced cracking occurred at the interface between the DLC coating and the chromium buffer layer due to hydrogen permeation, which decreased the durability of the DLC coating. Hydrogen embrittlement DLC coating Adhesion strength Wear resistance Degradation of coating Full Text Additional Declarations (Not answered) Cite Share Download PDF Status: Published Journal Publication published 04 May, 2024 Read the published version in npj Materials Degradation → Version 1 posted Editorial decision: revise 24 Jan, 2024 Review # 2 received at journal 22 Jan, 2024 Review # 1 received at journal 10 Jan, 2024 Reviewer # 2 agreed at journal 03 Jan, 2024 Reviewer # 1 agreed at journal 02 Jan, 2024 Reviewers invited by journal 01 Jan, 2024 Editor assigned by journal 26 Dec, 2023 Submission checks completed at journal 25 Dec, 2023 First submitted to journal 25 Dec, 2023 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. 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