Role of surface wetting on tribological behavior for laser nanotextured steel using ionic liquid lubricants
Journal Article
·
· Journal of Manufacturing Processes
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Univ. of Iowa, Iowa City, IA (United States)
- Gachon University (Korea, Republic of)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Here, 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 fluorocarbon 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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1994632
- Alternate ID(s):
- OSTI ID: 2000575
- Journal Information:
- Journal of Manufacturing Processes, Journal Name: Journal of Manufacturing Processes Vol. 95; ISSN 1526-6125
- Publisher:
- Society of Manufacturing Engineers; ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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