Friction and wear characteristics of TiO 2 nano-additive water-based lubricant on ferritic stainless steel

The tribological behaviour of innovative TiO2 nano-additive water-based lubricant on ferritic stainless steel (FSS) 445 was characterised on a ball-on-disk tribometer. Non-oxidised (clean) and pre-oxidised FSS 445 disks with original rough surfaces were both applied in the tribological tests at room temperature. The results show that the water-based nanolubricants with concentrations of 0.4–8.0 wt% TiO2 can significantly reduce the coefficient of friction (COF) on the two types of disks. The 4.0 wt% TiO2 lubricant exhibits optimal tribological properties, including the lowest COF and the strongest anti-wear ability on the applied balls under all lubrication conditions. The lubrication mechanisms are primarily ascribed to the formation of tribofilm and the ball-bearing effect of the TiO2 nanoparticles, respectively, on the two different disks. Disciplines Engineering | Science and Technology Studies Publication Details Wu, H. , Zhao, J., Cheng, X. , Xia, W. , He, A. , Yun, J., Huang, S. , Wang, L. , Huang, H. , Jiao, S. & Jiang, Z. (2018). Friction and wear characteristics of TiO2 nano-additive water-based lubricant on ferritic stainless steel. Tribology International, 117 24-38. Authors Hui Wu, Jingwei Zhao, Xiawei Cheng, Wenzhen Xia, Anshun He, Jung-Ho Yun, Shuiquan Huang, Lianzhou Wang, Han Huang, Sihai Jiao, and Zhengyi Jiang This journal article is available at Research Online: http://ro.uow. edu.au/eispapers1/615 1 Friction and wear characteristics of TiO2 nano-additive water-based lubricant on ferritic stainless steel Hui Wu, Jingwei Zhao, Xiawei Cheng, Wenzhen Xia, Anshun He, Jung-Ho Yun, Shuiquan Huang, Lianzhou Wang, Han Huang, Sihai Jiao, Zhengyi Jiang a School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia b School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia c School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia d Baosteel Research Institute (R&D Centre), Baoshan Iron & Steel Co., Ltd., Shanghai 200431, China Abstract: The tribological behaviour of innovative TiO2 nano-additive water-based lubricant on ferritic stainless steel (FSS) 445 was characterised on a ball-on-disk tribometer. Non-oxidised (clean) and preoxidised FSS 445 disks with original rough surfaces were both applied in the tribological tests at room temperature. The results show that the water-based nanolubricants with concentrations of 0.4-8.0 wt% TiO2 can significantly reduce the coefficient of friction (COF) on the two types of disks. The 4.0 wt% TiO2 lubricant exhibits optimal tribological properties, including the lowest COF and the strongest antiwear ability on the applied balls under all lubrication conditions. The lubrication mechanisms are primarily ascribed to the formation of tribofilm and the ball-bearing effect of the TiO2 nanoparticles, respectively, on the two different disks. The tribological behaviour of innovative TiO2 nano-additive water-based lubricant on ferritic stainless steel (FSS) 445 was characterised on a ball-on-disk tribometer. Non-oxidised (clean) and preoxidised FSS 445 disks with original rough surfaces were both applied in the tribological tests at room temperature. The results show that the water-based nanolubricants with concentrations of 0.4-8.0 wt% TiO2 can significantly reduce the coefficient of friction (COF) on the two types of disks. The 4.0 wt% TiO2 lubricant exhibits optimal tribological properties, including the lowest COF and the strongest antiwear ability on the applied balls under all lubrication conditions. The lubrication mechanisms are primarily ascribed to the formation of tribofilm and the ball-bearing effect of the TiO2 nanoparticles, respectively, on the two different disks.