{"title":"通过质子辐照实现干燥空气中溅射 MoS2 薄膜的超润滑性","authors":"Xinhu Wu, Yongfu Wang, Kuiliang Gong, Gaiqing Zhao, Xudong Sui, Xiaobo Wang","doi":"10.1007/s11249-024-01938-1","DOIUrl":null,"url":null,"abstract":"<div><p>The superlubricity of sputtered MoS<sub>2</sub> film under dry air environment was achieved by low-energy proton irradiation of 25 keV for the first time. We found that proton (H<sup>+</sup>) irradiation is able to break the Mo-S covalent bonding of as-deposited MoS<sub>2</sub> film and leads to the formation of MoS<sub>2</sub> nanocrystalline domains. The dangling bonds at edge planes or newly exposed edges could be passivated with hydrogen ions by bonding interaction under proton irradiation, forming hydric MoS<sub>2</sub> nanocrystalline domains with stable S–H bind, resulting in superior antioxidant capacity of proton-irradiated MoS<sub>2</sub> film compared to its non-irradiated counterpart. Importantly, proton irradiation can penetrate the interior of sputtered MoS<sub>2</sub> film with thickness over 1 µm and restructure the as-deposited MoS<sub>2</sub> film into nanocrystalline MoS<sub>2</sub> domains to achieve superlubricity and life extension under dry air conditions.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"73 1","pages":""},"PeriodicalIF":2.9000,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Superlubricity of Sputtered MoS2 Film in Dry Air Enabled by Proton Irradiation\",\"authors\":\"Xinhu Wu, Yongfu Wang, Kuiliang Gong, Gaiqing Zhao, Xudong Sui, Xiaobo Wang\",\"doi\":\"10.1007/s11249-024-01938-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The superlubricity of sputtered MoS<sub>2</sub> film under dry air environment was achieved by low-energy proton irradiation of 25 keV for the first time. We found that proton (H<sup>+</sup>) irradiation is able to break the Mo-S covalent bonding of as-deposited MoS<sub>2</sub> film and leads to the formation of MoS<sub>2</sub> nanocrystalline domains. The dangling bonds at edge planes or newly exposed edges could be passivated with hydrogen ions by bonding interaction under proton irradiation, forming hydric MoS<sub>2</sub> nanocrystalline domains with stable S–H bind, resulting in superior antioxidant capacity of proton-irradiated MoS<sub>2</sub> film compared to its non-irradiated counterpart. Importantly, proton irradiation can penetrate the interior of sputtered MoS<sub>2</sub> film with thickness over 1 µm and restructure the as-deposited MoS<sub>2</sub> film into nanocrystalline MoS<sub>2</sub> domains to achieve superlubricity and life extension under dry air conditions.</p><h3>Graphical abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":806,\"journal\":{\"name\":\"Tribology Letters\",\"volume\":\"73 1\",\"pages\":\"\"},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2024-11-18\",\"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/s11249-024-01938-1\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tribology Letters","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11249-024-01938-1","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}
Superlubricity of Sputtered MoS2 Film in Dry Air Enabled by Proton Irradiation
The superlubricity of sputtered MoS2 film under dry air environment was achieved by low-energy proton irradiation of 25 keV for the first time. We found that proton (H+) irradiation is able to break the Mo-S covalent bonding of as-deposited MoS2 film and leads to the formation of MoS2 nanocrystalline domains. The dangling bonds at edge planes or newly exposed edges could be passivated with hydrogen ions by bonding interaction under proton irradiation, forming hydric MoS2 nanocrystalline domains with stable S–H bind, resulting in superior antioxidant capacity of proton-irradiated MoS2 film compared to its non-irradiated counterpart. Importantly, proton irradiation can penetrate the interior of sputtered MoS2 film with thickness over 1 µm and restructure the as-deposited MoS2 film into nanocrystalline MoS2 domains to achieve superlubricity and life extension under dry air conditions.
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.
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