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  4. Macroscopic oil-based superlubricity achieved on steel surfaces with the roughness of engineering level
 
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2023
Journal Article
Title

Macroscopic oil-based superlubricity achieved on steel surfaces with the roughness of engineering level

Abstract
In this work, the lubricating performance of 1,3-diketone oil was tested on steel surfaces with roughness grades in three different orders of magnitude. The results indicate that 1,3-diketone achieved superlubricity on both the smooth engineering surface (Sa = 17 nm) and a typical engineering surface (Sa = 202 nm). Remarkably, the superlubricity is obtained at a shorter running-in time on the rougher surface than on the smoother one. This is due to an accelerated tribochemical reaction by increasing the surface contact with the 1,3-diketone. In contrast, superlubricity is not achieved on the roughest surface (Sa = 2171 nm) due to the excessive consumption of 1,3-diketone oil and the large abrasive particles produced. This is the first paper to report oil-based superlubricity on steel surfaces with a roughness of around 200 nm. These results confirm the successful superlubricity of engineering steel with 1,3-diketone oil, which has an excellent prospect for industrial applications.
Author(s)
Li, Jiayang
School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan, China
Yuan, Yuyang
School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan, China
Amann, Tobias  
Fraunhofer-Institut für Werkstoffmechanik IWM  
Yuan, Chengqing
School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan, China
Li, Ke
School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan, China
Journal
Tribology letters  
DOI
10.1007/s11249-023-01707-6
Language
English
Fraunhofer-Institut für Werkstoffmechanik IWM  
Keyword(s)
  • superlubricity

  • surface roughness

  • 1,3-diketone oil

  • tribochemical reaction

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