In-situ friction and wear responses of WS2 films to space environment: Vacuum and atomic oxygen | |
Xu SS(徐书生)1,2; Sun JY(孙嘉奕)1; Weng LJ(翁立军)1; Yong Hua2; Liu WM(刘维民)1; Anne Neville2; Hu M(胡明)1; Gao XM(高晓明)1; Gao XM(高晓明); Hu M(胡明) | |
刊名 | Applied Surface Science |
2018 | |
卷号 | 447期号:0页码:368-373 |
关键词 | In-situ Atomic Oxygen Ws2 Films Friction Wear |
ISSN号 | 0169-4332 |
DOI | 10.1016/j.apsusc.2018.04.012 |
英文摘要 | The Friction and wear behavior of both sputtered WS2 films with loose or dense microstructures were investigated in vacuum, atomic oxygen (AO) and vacuum/AO irradiation alternate environments. The loose microstructure of pure WS2 film composed of columnar platelets and vertical pores and the dense microstructure showed high compactness. The results revealed that the WS2 films exhibited a periodic fluctuant friction coefficient and high wear under the synchronization action of AO irradiation and friction (in-situ condition). The in-situ results also indicated significantly difference from that of conventional ex-situ methods. As the friction environments were switched from vacuum to in-situ AO, the friction coefficients of the two types of films increased from 0.03 to 0.07 and the wear life of them declined identically to a small value of ~1.1 × 103 cycles, although the wear life of loose WS2 film was up to 1.7 × 104 cycles and that of the dense film was longer than 2.3 × 104 cycles in vacuum. The friction and wear behavior did not depend on the film compactness but the anti-oxidation ability of WS2 itself. For in-situ AO irradiation condition, the high friction resulted from the formation of oxidation product (WO3) by AO and its delamination by frictional interaction was responsible for high wear. |
学科主题 | 材料科学与物理化学 |
资助项目 | PVD润滑薄膜研究组 ; 空间润滑材料研究组 |
语种 | 英语 |
WOS记录号 | WOS:000432795500043 |
资助机构 | China National Natural Science Foundation (Grant No. 51575508 ; 51505465 ; 51575509 ; 51227804) |
内容类型 | 期刊论文 |
源URL | [http://ir.licp.ac.cn/handle/362003/22961] |
专题 | 兰州化学物理研究所_固体润滑国家重点实验室 兰州化学物理研究所_先进润滑与防护材料研究发展中心 |
通讯作者 | Gao XM(高晓明); Hu M(胡明) |
作者单位 | 1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China 2.Institute of Functional Surfaces, School of Mechanical Engineering, University of Leeds, Leeds LS2 9JT, UK |
推荐引用方式 GB/T 7714 | Xu SS,Sun JY,Weng LJ,et al. In-situ friction and wear responses of WS2 films to space environment: Vacuum and atomic oxygen[J]. Applied Surface Science,2018,447(0):368-373. |
APA | Xu SS.,Sun JY.,Weng LJ.,Yong Hua.,Liu WM.,...&Hu M.(2018).In-situ friction and wear responses of WS2 films to space environment: Vacuum and atomic oxygen.Applied Surface Science,447(0),368-373. |
MLA | Xu SS,et al."In-situ friction and wear responses of WS2 films to space environment: Vacuum and atomic oxygen".Applied Surface Science 447.0(2018):368-373. |
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