Role of surface wetting on tribological behavior for laser nanotextured steel using ionic liquid lubricants
- Authors
- Samanta, Avik; Huang, Wuji; Lee, Kyungjun; He, Xin; Kumara, Chanaka; Qu, Jun; Ding, Hongtao
- Issue Date
- Jun-2023
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Surface wetting; Laser texturing; Tribological behavior; Ionic liquid; Wear
- Citation
- JOURNAL OF MANUFACTURING PROCESSES, v.95, pp.302 - 311
- Journal Title
- JOURNAL OF MANUFACTURING PROCESSES
- Volume
- 95
- Start Page
- 302
- End Page
- 311
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88273
- DOI
- 10.1016/j.jmapro.2023.04.031
- ISSN
- 1526-6125
- Abstract
- This research evaluates the effect of surface wettability on the tribological performance through ball-on-flat tribology testing. The substrate material, M2 tool steel, is laser processed and then functionalized with fluoro-carbon and nitrile chemistry to achieve distinct oleophobicity and oleophilicity, respectively, but with a similar nanoscale surface texture. The baseline lubricant is poly-alpha-olefin (PAO) oil, and ionic liquids (ILs) are used as additives for this study. The interaction between the nanoscale textured steel surface and ionic liquid-based oils is investigated. A set of reciprocating wear tests are performed to investigate the tribological behavior of the tribo-system consisting of the surface-engineered, flat M2 tool steel specimen and a standard, surface-polished steel ball. Results show that the oleophobic flat surface results in a lower friction, while the oleophilic surface modification leads to a better wear protection to the flat surface. Ammonium-based IL provides the highest friction reduction, while the phosphonium-based ILs provide an improved wear protection.
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