{"title":"Adsorption-enhanced friction reduction in TiN-Ag/polyalphaolefin (PAO) solid-liquid systems: Catalytic induction of amorphous carbon formation","authors":"","doi":"10.1016/j.vacuum.2024.113671","DOIUrl":null,"url":null,"abstract":"<div><div>The construction of green and friendly solid-liquid lubrication system, especially the composite system without harmful elements such as phosphorus and sulfur, has been a hot research topic in tribology. In this paper, through the friction and wear performance of the prepared TiN-Ag/polyalphaolefin (PAO) composite system, various factors affecting the lubrication behavior of the solid-liquid composite system were deeply explored, including the surface energy of the film, the lubrication state of the composite system, the adsorption energy of the TiN-Ag/PAO system, tribochemical products, etc. The friction reduction mechanism of TiN-Ag/PAO solid-liquid composite system was revealed. In particular, through the characterization of tribochemical products accumulated at the contacting interface, the internal mechanism of PAO degradation to form amorphous carbon was revealed, and the catalytic induction mechanism of Ag and AgO<sub>2</sub> in the process of PAO degradation was clarified.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Vacuum","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0042207X24007176","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The construction of green and friendly solid-liquid lubrication system, especially the composite system without harmful elements such as phosphorus and sulfur, has been a hot research topic in tribology. In this paper, through the friction and wear performance of the prepared TiN-Ag/polyalphaolefin (PAO) composite system, various factors affecting the lubrication behavior of the solid-liquid composite system were deeply explored, including the surface energy of the film, the lubrication state of the composite system, the adsorption energy of the TiN-Ag/PAO system, tribochemical products, etc. The friction reduction mechanism of TiN-Ag/PAO solid-liquid composite system was revealed. In particular, through the characterization of tribochemical products accumulated at the contacting interface, the internal mechanism of PAO degradation to form amorphous carbon was revealed, and the catalytic induction mechanism of Ag and AgO2 in the process of PAO degradation was clarified.
构建绿色友好的固液润滑体系，尤其是不含磷、硫等有害元素的复合体系，一直是摩擦学领域的研究热点。本文通过制备的TiN-Ag/聚α烯烃（PAO）复合体系的摩擦磨损性能，深入探讨了影响固液复合体系润滑行为的各种因素，包括膜的表面能、复合体系的润滑状态、TiN-Ag/PAO体系的吸附能、摩擦生化产物等。研究揭示了 TiN-Ag/PAO 固液复合体系的减摩机理。特别是通过对接触界面积累的摩擦化学产物的表征，揭示了 PAO 降解形成无定形碳的内部机理，阐明了 Ag 和 AgO2 在 PAO 降解过程中的催化诱导机理。
期刊介绍：
Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences.
A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below.
The scope of the journal includes:
1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes).
2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis.
3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification.
4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.
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