{"title":"Multilayer structure design for preparing ultralow wear amorphous carbon films","authors":"Cong Wang , Xiao Zhang , Yan Lu , Junying Hao","doi":"10.1016/j.triboint.2024.109729","DOIUrl":null,"url":null,"abstract":"<div><p>This study promotes a thick amorphous carbon film with ultralow wear by multilayer design of a-C:H:Si<sub>n+1</sub>/GLC<sub>n</sub> under different modulation periods using magnetron sputtering. The results illustrates that the sufficiently thick a-C:H:Si top layer serve as excellent lubrication layer and the GLC provides support, while the multilayer structure alleviates the internal stress, which hindered the generation and extension of longitudinal cracks, avoiding the wear penetration and layer depletion. The friction coefficient of a-C:H:Si<sub>2</sub>/GLC film with a top layer thickness of 750 nm was 0.06 and the wear rate was even lowered to 4.96 × 10<sup>−9</sup> mm<sup>3</sup>/Nm for 10 h friction. The friction and lubrication mechanism is discussed in terms of the microstructure, mechanical properties and friction behaviors.</p></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"196 ","pages":"Article 109729"},"PeriodicalIF":6.1000,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tribology International","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0301679X2400481X","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
This study promotes a thick amorphous carbon film with ultralow wear by multilayer design of a-C:H:Sin+1/GLCn under different modulation periods using magnetron sputtering. The results illustrates that the sufficiently thick a-C:H:Si top layer serve as excellent lubrication layer and the GLC provides support, while the multilayer structure alleviates the internal stress, which hindered the generation and extension of longitudinal cracks, avoiding the wear penetration and layer depletion. The friction coefficient of a-C:H:Si2/GLC film with a top layer thickness of 750 nm was 0.06 and the wear rate was even lowered to 4.96 × 10−9 mm3/Nm for 10 h friction. The friction and lubrication mechanism is discussed in terms of the microstructure, mechanical properties and friction behaviors.
期刊介绍：
Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International.
Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.
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