Tribological Investigation of Chemically Modified Polytetrafluoroethylene Coating for Hydrogen Valve Application

IF 2.9 3区 工程技术 Q2 ENGINEERING, CHEMICAL Tribology Letters Pub Date : 2024-06-29 DOI:10.1007/s11249-024-01869-x
Danavath Balu, Piyush Chandra Verma, Suresh Kumar Reddy Narala, R. Sujith, Prabakaran Saravanan
{"title":"Tribological Investigation of Chemically Modified Polytetrafluoroethylene Coating for Hydrogen Valve Application","authors":"Danavath Balu,&nbsp;Piyush Chandra Verma,&nbsp;Suresh Kumar Reddy Narala,&nbsp;R. Sujith,&nbsp;Prabakaran Saravanan","doi":"10.1007/s11249-024-01869-x","DOIUrl":null,"url":null,"abstract":"<div><p>Hydrogen embrittlement (HE) can cause catastrophic failure of stainless steel valve and related components in hydrogen refueling stations (HRSs), reducing reliability, safety and increasing the cost. Here, in this study, the ability of chemically modified polytetrafluoroethylene (CM-PTFE) coatings on steel substrates in reducing the HE susceptibility and, the friction and wear of valve parts, are explored due to its low hydrogen (H<sub>2</sub>) permeability and excellent solid lubrication. The solid lubrication properties of CM-PTFE-coated steel samples were investigated before and after H<sub>2</sub> charging at a pressure of 7 × 10<sup>5</sup> Pascals. After H<sub>2</sub> charging, the samples were subjected to CHNS and X-ray diffraction (XRD) analysis to quantify the percentage of H<sub>2</sub> absorption and its effect on crystallinity of the samples, respectively, and interesting insights were obtained from both CHNS and XRD analysis. Furthermore, the effect of H<sub>2</sub> charging on uncoated steel discs and CM-PTFE-coated discs were thoroughly investigated by hardness measurements, tribological characterization, wear behavior analysis of discs and pins and chemical elemental mapping. All test results are harmoniously suggesting that the H<sub>2</sub> charging indeed softened the material significantly. The developed double function CM-PTFE coatings can minimize H<sub>2</sub> permeability and also reduce friction, and wear of the components in HRSs.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":null,"pages":null},"PeriodicalIF":2.9000,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tribology Letters","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11249-024-01869-x","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0

Abstract

Hydrogen embrittlement (HE) can cause catastrophic failure of stainless steel valve and related components in hydrogen refueling stations (HRSs), reducing reliability, safety and increasing the cost. Here, in this study, the ability of chemically modified polytetrafluoroethylene (CM-PTFE) coatings on steel substrates in reducing the HE susceptibility and, the friction and wear of valve parts, are explored due to its low hydrogen (H2) permeability and excellent solid lubrication. The solid lubrication properties of CM-PTFE-coated steel samples were investigated before and after H2 charging at a pressure of 7 × 105 Pascals. After H2 charging, the samples were subjected to CHNS and X-ray diffraction (XRD) analysis to quantify the percentage of H2 absorption and its effect on crystallinity of the samples, respectively, and interesting insights were obtained from both CHNS and XRD analysis. Furthermore, the effect of H2 charging on uncoated steel discs and CM-PTFE-coated discs were thoroughly investigated by hardness measurements, tribological characterization, wear behavior analysis of discs and pins and chemical elemental mapping. All test results are harmoniously suggesting that the H2 charging indeed softened the material significantly. The developed double function CM-PTFE coatings can minimize H2 permeability and also reduce friction, and wear of the components in HRSs.

Abstract Image

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
氢气阀门应用中化学改性聚四氟乙烯涂层的摩擦学研究
氢脆(HE)会导致加氢站(HRS)中的不锈钢阀门和相关部件发生灾难性故障,从而降低可靠性和安全性并增加成本。在本研究中,探讨了钢基体上的化学改性聚四氟乙烯(CM-PTFE)涂层因其低氢(H2)渗透性和优异的固体润滑性,在降低氢脆敏感性、减少阀门部件摩擦和磨损方面的能力。在 7 × 105 帕斯卡压力下充入 H2 前后,研究了 CM-PTFE 涂层钢样品的固体润滑特性。充入 H2 后,对样品进行了 CHNS 和 X 射线衍射 (XRD) 分析,以分别量化样品吸收 H2 的百分比及其对结晶度的影响。此外,还通过硬度测量、摩擦学表征、盘和销的磨损行为分析以及化学元素图谱,深入研究了充入 H2 对未涂层钢盘和 CM-PTFE 涂层盘的影响。所有测试结果都一致表明,充入的 H2 确实极大地软化了材料。所开发的双功能 CM-PTFE 涂层可最大限度地降低 H2 渗透率,同时还能减少 HRS 中部件的摩擦和磨损。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Tribology Letters
Tribology Letters 工程技术-工程:化工
CiteScore
5.30
自引率
9.40%
发文量
116
审稿时长
2.5 months
期刊介绍: Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.
期刊最新文献
Wear Mechanism and Wear Debris Characterization of ULWPE in Multidirectional Motion Cobalt- and Chromium-Oxide-Based Coatings: Thermally Spraying a Glaze Layer Visualization of Structural Deformation of Polymer Additives in Oil Under High Shear Flow Influence of Variable-Depth Groove Texture on the Friction and Wear Performance of GCr15–SiC Friction Pairs Under Water Lubrication The Flow of Lubricant as a Mist in the Piston Assembly and Crankcase of a Fired Gasoline Engine: The Effect of Viscosity Modifier and the Link to Lubricant Degradation
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1