Role of surface wetting on tribological behavior for laser nanotextured steel using ionic liquid lubricants

Avik Samanta; Wuji Huang; Kyungjun Lee; Xin He; Chanaka Kumara; Jun Qu; Hongtao Ding

doi:10.1016/j.jmapro.2023.04.031

Role of surface wetting on tribological behavior for laser nanotextured steel using ionic liquid lubricants

Avik Samanta, Wuji Huang, Kyungjun Lee, Xin He, Chanaka Kumara, Jun Qu, Hongtao Ding

Surface Engineering and Tribology

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

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 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.

Original language	English
Pages (from-to)	302-311
Number of pages	10
Journal	Journal of Manufacturing Processes
Volume	95
DOIs	https://doi.org/10.1016/j.jmapro.2023.04.031
State	Published - Jun 9 2023

Funding

The authors thank H.M. Luo from ORNL for synthesis of the ionic liquids, E. Conrad from Solvay for providing phosphonium cation feedstocks, C. Dubin from ExxonMobil for providing the PAO base oil. The authors gratefully acknowledge the financial support by the National Science Foundation under Grant Number CMMI-1762353 . Research was partially supported by Vehicle Technologies Office , Office of Energy Efficiency and Renewable Energy , U.S. Department of Energy (DOE). The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Hongtao Ding reports financial support was provided by National Science Foundation.The authors thank H.M. Luo from ORNL for synthesis of the ionic liquids, E. Conrad from Solvay for providing phosphonium cation feedstocks, C. Dubin from ExxonMobil for providing the PAO base oil. The authors gratefully acknowledge the financial support by the National Science Foundation under Grant Number CMMI-1762353. Research was partially supported by Vehicle Technologies Office, Office of Energy Efficiency and Renewable Energy, U.S. Department of Energy (DOE).

Keywords

Ionic liquid
Laser texturing
Surface wetting
Tribological behavior
Wear

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10.1016/j.jmapro.2023.04.031

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title = "Role of surface wetting on tribological behavior for laser nanotextured steel using ionic liquid lubricants",

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 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.",

keywords = "Ionic liquid, Laser texturing, Surface wetting, Tribological behavior, Wear",

author = "Avik Samanta and Wuji Huang and Kyungjun Lee and Xin He and Chanaka Kumara and Jun Qu and Hongtao Ding",

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AU - Samanta, Avik

AU - Huang, Wuji

AU - Lee, Kyungjun

AU - He, Xin

AU - Kumara, Chanaka

AU - Qu, Jun

AU - Ding, Hongtao

PY - 2023/6/9

Y1 - 2023/6/9

N2 - 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.

AB - 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.

KW - Ionic liquid

KW - Laser texturing

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KW - Wear

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Role of surface wetting on tribological behavior for laser nanotextured steel using ionic liquid lubricants

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