Improving the lubrication of WSNb nanocomposite coatings by the in-situ oxygen shielding effect at elevated temperatures: A combined study with density functional theory simulations

	Improving the lubrication of WSNb nanocomposite coatings by the in-situ oxygen shielding effect at elevated temperatures: A combined study with density functional theory simulations
Department	固体润滑国家重点实验室（LSL）
	Zhu Jianing ; Zeng Qunfeng ; Zhang Bin
The second department	纳米润滑中心607
	2023
Source Publication	PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOG
Volume	237 Issue:5 Pages:1181-1196
Abstract	In order to improve the lubrication performance of the WS₂-based coatings at elevated temperature, the mechanisms of enhancing the tribological performance of WSNb coatings at elevated temperatures are investigated. The WSNb coating doped with 11.9 at.% Nb exhibited excellent anti-friction and wear resistance, achieved a low coefficient of friction of 0.02 at 400 °C, and its wear resistance was much better than that of WS₂-based coatings. The Nb metal and its sulfide in the coating are more sensitive to oxygen than WS₂ at 400 °C, which reduces the oxygen concentration between the friction pairs and protects the WS₂ lubricating phase from being oxided. In addition, Nb enhances the hardness and Young's modulus of the coatings through the solid solution strengthening effect, generating a more continuous and stable lubricating film during the silding process. First-principles calculation results demonstrated that the Nb spontaneously forms Nb-S bonds with S atoms in the coating. The molecular details of the Nb-S formation have been investigated in depth.
If	2.0
Language	英语
compositor	第三作者单位
Document Type	期刊论文
Identifier	http://ir.licp.cn/handle/362003/30485
Collection	固体润滑国家重点实验室（LSL）
Affiliation	1.Key Laboratory of Ministry of Education for Modern Design and Rotor-Bearing System 2.Key Laboratory of Ministry of Education for Modern Design and Rotor-Bearing System 3.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics
Recommended Citation GB/T 7714	Zhu Jianing,Zeng Qunfeng,Zhang Bin. Improving the lubrication of WSNb nanocomposite coatings by the in-situ oxygen shielding effect at elevated temperatures: A combined study with density functional theory simulations[J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOG,2023,237(5):1181-1196.
APA	Zhu Jianing,Zeng Qunfeng,&Zhang Bin.(2023).Improving the lubrication of WSNb nanocomposite coatings by the in-situ oxygen shielding effect at elevated temperatures: A combined study with density functional theory simulations.PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOG,237(5),1181-1196.
MLA	Zhu Jianing,et al."Improving the lubrication of WSNb nanocomposite coatings by the in-situ oxygen shielding effect at elevated temperatures: A combined study with density functional theory simulations".PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOG 237.5(2023):1181-1196.

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