Microstructure evolution and enhanced vacuum tribological performance of Ni-doped WS2 composite coating | |
Department | 先进润滑与防护材料研究发展中心 |
Xu SS(徐书生)1; Weng LJ(翁立军)2; Liu, Yu-Zhen1,3; Kyeong-Hee Kang1,3; Chang-Lae Kim1,3; Dae-Eun Kim1,3 | |
The second department | 固体润滑国家重点实验室 |
2017 | |
Source Publication | Surface and Coatings Technology |
ISSN | 0257-8972 |
Volume | 325Pages:81-88 |
Abstract | Ni-doped WS2 composite coatings with various Ni contents were co -deposited using a radio frequency sputtering system on silicon wafer and AISI 440C stainless steel substrates. The microstructural characteristics of the WS2-Ni composite coatings and their tribological properties in vacuum were assessed. During introduction of Ni dopant in the WS2-Ni composite coating the sulfur/tungsten (S/W) ratio in the coating increased due to reduced preferential resputtering of sulfur atoms in the growing coating. The microstructure of the WS2-Ni composite coating varied from a fine columnar structure for Ni content equal to or less than 7.7 at.% to a featureless structure as the Ni content increased further. The Ni dopant inhibited the growth of the coarse columnar WS2 platelets which was accompanied by nanocrystallization and amorphization of the composite coating structure. WS2-Ni composite coatings with fine columnar structure exhibited relatively low hardness but showed a high tendency to form a lubricating transfer layer. It also demonstrated low brittleness and prolonged wear life in vacuum condition compared to coatings with dense featureless structure. The variation in tribological performance between the composite coatings resulted from the different wear mechanisms associated with their distinct microstructures. |
Keyword | Ws2 Coating Ni Dopant Mechanical Properties Friction Wear Vacuum |
Subject Area | 材料科学与物理化学 |
DOI | 10.1016/j.surfcoat.2017.06.036 |
Funding Organization | the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2010-0018289);the National Key Basic Research Program of China (973) [grant number 2013CB632300];the National Natural Science Foundation of China [grant number 51505465] |
Indexed By | SCI |
If | 2.589 |
Language | 英语 |
Funding Project | PVD润滑薄膜研究组 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/22499 |
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 | Dae-Eun Kim |
Affiliation | 1.Yonsei Univ, Ctr Nanowear, Seoul 03722, South Korea 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China 3.Yonsei Univ, Dept Mech Engn, Seoul 03722, South Korea |
Recommended Citation GB/T 7714 | Xu SS,Weng LJ,Liu, Yu-Zhen,et al. Microstructure evolution and enhanced vacuum tribological performance of Ni-doped WS2 composite coating[J]. Surface and Coatings Technology,2017,325:81-88. |
APA | Xu SS,Weng LJ,Liu, Yu-Zhen,Kyeong-Hee Kang,Chang-Lae Kim,&Dae-Eun Kim.(2017).Microstructure evolution and enhanced vacuum tribological performance of Ni-doped WS2 composite coating.Surface and Coatings Technology,325,81-88. |
MLA | Xu SS,et al."Microstructure evolution and enhanced vacuum tribological performance of Ni-doped WS2 composite coating".Surface and Coatings Technology 325(2017):81-88. |
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