| Preparation and properties of MoS2/a-C films for space tribology | |
| Department | 先进润滑与防护材料研究发展中心 |
Wu YX(吴艳霞)1,2 ; Li HX(李红轩)1; Ji L(吉利)1; Ye YP(冶银平)1; Chen JM(陈建敏)1; Zhou HD(周惠娣)1; Chen JM(陈建敏); Li HX(李红轩)
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| The second department | 固体润滑国家重点实验室 |
| 2013 | |
| Source Publication | Journal of Physics D: Applied Physics
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| ISSN | 0022-3727 |
| Volume | 46Issue:42Pages:425301(1-9) |
| Abstract | MoS2/a-C composite films with various (Mo+S)/C ratios were deposited by medium frequency unbalanced magnetron sputtering. The effects of MoS2 doping on the microstructure, mechanical and vacuum tribological properties of the films were investigated. Results show that the sp2 carbon content in the film increases with increasing (Mo+S)/C ratio from 0 to 0.19, and MoS2 nanocrystallines are formed in film as (Mo+S)/C ratio increased to 0.07. Consequently, the composite film exhibits decreasing hardness (from 5.2 to 2.5 GPa) and elastic modulus (from 116 to 24 GPa). As the (Mo+S)/C ratio increases from 0 to 0.19, the friction coefficient of the films decreases from 0.18 to 0.008 and sliding time increases from 3 s to more than 3600 s in vacuum. This is mainly attributed to that the films with higher (Mo+S)/C ratios (at least 0.12) are inclined to form the lamellar MoS2 with low shear strength on the counterface. Furthermore, the composite film with (Mo+S)/C ratio of 0.12 has been investigated in various test environments (air, N2, vacuum). The average friction coefficient is lower than 0.035 and it exhibits little sensitivity to the test environment. However, the highest and lowest wear rate (about 4 × 10−7 mm3 Nm−1 and 0.8 × 10−7 mm3 Nm−1) are obtained in vacuum and N2, respectively. The environment dependence of the tribological behaviours is related with the lattice orientation of MoS2 crystalline and the graphitization degree of the film. |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1088/0022-3727/46/42/425301 |
| Funding Organization | the National Natural Science Foundation of China (Grant No 51275509;51175491);the 973 Project of China (No 2013CB632300);the Chinese Academy of Science |
| Indexed By | SCI |
| If | 2.521 |
| Language | 英语 |
| Funding Project | 磨损与表面工程课题组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/4467 |
| Collection | 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Chen JM(陈建敏); Li HX(李红轩) |
| Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Wu YX,Li HX,Ji L,et al. Preparation and properties of MoS2/a-C films for space tribology[J]. Journal of Physics D: Applied Physics,2013,46(42):425301(1-9). |
| APA | Wu YX.,Li HX.,Ji L.,Ye YP.,Chen JM.,...&李红轩.(2013).Preparation and properties of MoS2/a-C films for space tribology.Journal of Physics D: Applied Physics,46(42),425301(1-9). |
| MLA | Wu YX,et al."Preparation and properties of MoS2/a-C films for space tribology".Journal of Physics D: Applied Physics 46.42(2013):425301(1-9). |
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| Journal of physice D（2736KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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