A novel design by constructing MoS2/WS2 multilayer film doped with tantalum toward superior friction performance in multiple environment
A novel design by constructing MoS2/WS2 multilayer film doped with tantalum toward superior friction performance in multiple environment
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通过构建掺杂钽的MoS2/WS2多层薄膜的新颖设计，在多种环境下实现优异的摩擦性能
DOI：
10.1007/s10853-021-06217-1
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发表时间：
2021-09
期刊：
影响因子：
--
通讯作者：
Jibin Pu
中科院分区：
文献类型：
--
作者：
Zhaoxia Lu;Chaozhi Zhang;Chun Zeng;Siming Ren;Jibin Pu
Transition metal dichalcogenides (TMDs) are easily oxidized in the humid atmosphere, leading to a decrease in their lubricating properties and limiting their application. In this study, a MoS2/WS2 multilayer film doped with tantalum (MoS2/WS2-Ta) is fabricated by magnetron sputtering to improve the corrosion and oxidation resistance of TMDs. Results show that doping of Ta makes the structure of the MoS2/WS2 multilayer film more compact, and the MoS2 and WS2 crystals exhibit a stronger (0002) preferred orientation than that of un-doped sample. Such compact structure and (0002) preferred orientation of MoS2/WS2-Ta can realize a high corrosion resistance, i.e., a more positive corrosion potential and a lower corrosion current density in comparison with the MoS2/WS2 multilayer. Furthermore, the friction properties of MoS2/WS2 multilayer film doped with 1.1 at% of Ta are improved remarkably under both of high temperature (370 °C in air) and vacuum conditions, the result is attributed to its high mechanical properties and (0002) preferred orientation. In a word, the combination of multilayer structure and doping of Ta into the films is a promising approach to accurately design the TMDs toward a wide temperature range and environmentally adaptive lubricants.
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