1. Effects of oil-in-water based nanolubricant containing TiO2 nanoparticles on the tribological behaviour of oxidised high-speed steel.
- Author
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Xia, Wenzhen, Zhao, Jingwei, Wu, Hui, Jiao, Sihai, and Jiang, Zhengyi
- Subjects
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TOOL-steel , *LUBRICATION & lubricants , *TITANIUM dioxide nanoparticles , *OXIDIZING agents , *TRIBOLOGY - Abstract
In this work, the effects of the developed oil-in-water (O/W) based nanolubricants containing TiO 2 nanoparticles (NPs) on the tribological behaviour of oxidised high-speed steel (HSS) were studied, using pin-on-disc tests. The pin was made of HSS and, prior to the wear test, was oxidised to form a scale layer on the surface. The results show that the TiO 2 NPs in the O/W lubricant can achieve an excellent reduction of the coefficient of friction (COF) and improve the anti-wear properties of pins with oxidised surfaces. The TiO 2 NPs in the nanolubricant were found to have the filling and tribo-sintering effects. The NP aggregation around the contact area was observed with higher TiO 2 NP concentrations in the nanolubricant, revealing a larger NP aggregation area. Based on the results and analysis, the mechanism about the effects of the TiO 2 NPs in the O/W based nanolubricant on the wear and COF were well explained. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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