Two strategies to improve the lubricating performance of WS2 film for space application
Two strategies to improve the lubricating performance of WS2 film for space application
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DOI：
10.1016/j.triboint.2022.107825
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发表时间：
2022-07
影响因子：
6.2
通讯作者：
Jian Liu;Zhen Yan;Junying Hao;Weimin Liu
中科院分区：
文献类型：
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作者：
Jian Liu;Zhen Yan;Junying Hao;Weimin Liu
采用磁控溅射方法制备了双层结构的WS2薄膜。主要考察了沉积的WS2薄膜、AO辐照的WS2薄膜和WS2/P201杂化体系在同一薄膜上的摩擦学差异。与沉积的WS2薄膜相比，AO辐照的WS2薄膜具有较低的初始摩擦系数和较低的磨损率，并具有较长的使用寿命。同时，WS2/P201混合动力系统进一步延长了使用寿命。结果表明，生成的WS2磨屑以不同的参与状态作为润滑剂，不同润滑体系中的空气隔离度对WS2薄膜的摩擦学性能有影响。最后，揭示了AO辐照WS2薄膜和WS2/P201杂化体系在真空中的不同润滑机理。
WS2films with duplex-layer structure were deposited by magnetron sputtering. The tribological differences of as-deposited, AO-irradiated WS2films and WS2/P201 hybrid system were mainly investigated for the same film. In comparison with as-deposited WS2film, AO-irradiated WS2film exhibits the lower initial friction coefficient and lower wear rate, and longer service longevity. Meanwhile, WS2/P201 hybrid system significantly extended service life further. It is found that the generated WS2debris act as lubricating agent with different participation states and air isolation in the different lubricating systems affect the tribological property of WS2film. Eventually, different lubrication mechanisms for AO-irradiated WS2film and WS2/P201 hybrid system in vacuum were revealed.