Abrar Faiyad, Daniel Miliate, Samuel Leventini, Jeffrey R. Lince, Ashlie Martini
{"title":"Temperature‑Dependent Friction, Wear, and Life of MoS₂ Dry Film Lubricants for Space Mechanisms: A Comprehensive Review","authors":"Abrar Faiyad, Daniel Miliate, Samuel Leventini, Jeffrey R. Lince, Ashlie Martini","doi":"10.1007/s11249-025-02052-6","DOIUrl":null,"url":null,"abstract":"<p>Molybdenum Disulfide (MoS<sub>2</sub>) is the most widely used dry film lubricant (DFL) for moving mechanical assemblies that operate in space. For these applications, the MoS<sub>2</sub> must provide low friction and wear across a range of temperatures. The temperature dependence of MoS<sub>2</sub> tribological behavior has been studied previously. However, the number of temperatures and conditions that can be tested in a single study is necessarily limited, making it difficult to predict or understand the performance of DFLs more broadly. To address this, this review article summarizes and analyzes the results from prior studies of temperature-dependent tribological behavior of MoS<sub>2</sub>-based dry film lubricants. Friction, wear, and wear life data are compiled into a plot matrix and trends are identified. Then, the mechanisms that have been proposed to explain observed trends are summarized. Finally, gaps in the knowledge and opportunities for future work are discussed such that researchers can build on existing studies to enhance the reliability and performance of MoS<sub>2</sub>-based dry film lubricants in space environments.</p>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"73 4","pages":""},"PeriodicalIF":3.3000,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12316733/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tribology Letters","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11249-025-02052-6","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
Molybdenum Disulfide (MoS2) is the most widely used dry film lubricant (DFL) for moving mechanical assemblies that operate in space. For these applications, the MoS2 must provide low friction and wear across a range of temperatures. The temperature dependence of MoS2 tribological behavior has been studied previously. However, the number of temperatures and conditions that can be tested in a single study is necessarily limited, making it difficult to predict or understand the performance of DFLs more broadly. To address this, this review article summarizes and analyzes the results from prior studies of temperature-dependent tribological behavior of MoS2-based dry film lubricants. Friction, wear, and wear life data are compiled into a plot matrix and trends are identified. Then, the mechanisms that have been proposed to explain observed trends are summarized. Finally, gaps in the knowledge and opportunities for future work are discussed such that researchers can build on existing studies to enhance the reliability and performance of MoS2-based dry film lubricants in space environments.
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.