Tribological properties and transfer behaviors of WS2-Ag 2-Ag nanocomposite films with structure evolution for aerospace application

被引：4
作者：
Yan, Zhen [1 ,3 ]
Liu, Jian [1 ,3 ]
Shi, Xiancong [1 ,2 ]
Wang, Cong [1 ,2 ]
Lu, Xiaolong [1 ,3 ]
Hao, Junying [1 ,3 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
[3] Qingdao Ctr Resource Chem & New Mat, Qingdao 266000, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2024年 / 674卷
关键词：
WS 2-Ag nanocomposite film; Wear endurance; Transfer behavior; Lubricating mechanism; COATINGS; SPACE; FRICTION; RESPONSES; VACUUM; GROWTH; CARBON;
D O I：
10.1016/j.apsusc.2024.160928
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Developing Ag-doped WS2 2 film can be used to improve wear endurance for space conductive sliding component in future. Herein, the tribological properties of WS2-Ag 2-Ag nanocomposite films were mainly investigated in vacuum in detail. The results show that incorporation of Ag leads to film structure becoming very dense, obviously enhancing mechanical properties. With increase of Ag content, the wear life of the films firstly is prolonged and then is shortened, among which the film doped 6.42 at.% Ag exhibits the most excellent tribological performance. It is attributed that WS2-Ag 2-Ag crystal grains occurred alignment with the (002) easy-shear planes, thus forming the thick long-range ordered WS2-Ag 2-Ag crystalline transfer film only in optimized Ag content for dense film. Noteworthily, Ag nanocrystalline dispersed into WS2 2 crystals is found to play a vital role in combination and strengthening to microstructure of transfer film. Ultimately, the lubricating mechanism of WS2-Ag 2-Ag film is revealed by clarifying its transfer behavior occurred on sliding contact area.
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页数：9
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