TY - JOUR
T1 - Macroscale superlubricity of steel by polymer-based ionic liquids without a running-in period
AU - Chen, Huanyi
AU - Cai, Tao
AU - Li, Hua
AU - Ruan, Xinxin
AU - Jiao, Chengcheng
AU - Atkin, Rob
AU - Wang, Yandong
AU - Gong, Ping
AU - Zhou, Xiangyang
AU - Yu, Jinhong
AU - Jiang, Nan
PY - 2023/4
Y1 - 2023/4
N2 - A series of polymer-based ionic liquids (PILs) with a flexible and electron-rich polymeric chain attached to the cation have been designed as lubricants for steel-steel systems. Compared to widely used poly-alpha olefin (PAO) and commercial lubricants, the PIL lubricants show noticeably lower friction and better surface protection. Notably, for the PIL, ionic liquids based on 2, 5-furandicarboxylic acid (FA-IL), macroscale superlubricity is achieved immediately (without a running-in period) when the temperature is 75 °C and higher. Surface characterizations and molecular dynamics simulations show superlubricity results from the robust lubricating film immediately formed at the steel surface due to the rapid adsorption of FA-IL ions via multiple sites. This work provides new insights into the design of macroscale superlubricity systems.
AB - A series of polymer-based ionic liquids (PILs) with a flexible and electron-rich polymeric chain attached to the cation have been designed as lubricants for steel-steel systems. Compared to widely used poly-alpha olefin (PAO) and commercial lubricants, the PIL lubricants show noticeably lower friction and better surface protection. Notably, for the PIL, ionic liquids based on 2, 5-furandicarboxylic acid (FA-IL), macroscale superlubricity is achieved immediately (without a running-in period) when the temperature is 75 °C and higher. Surface characterizations and molecular dynamics simulations show superlubricity results from the robust lubricating film immediately formed at the steel surface due to the rapid adsorption of FA-IL ions via multiple sites. This work provides new insights into the design of macroscale superlubricity systems.
KW - Adsorption
KW - Macroscale superlubricity
KW - Polymer-based ionic liquid (PIL)
KW - Running-in period
UR - http://www.scopus.com/inward/record.url?scp=85148571689&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2023.108349
DO - 10.1016/j.triboint.2023.108349
M3 - Article
AN - SCOPUS:85148571689
SN - 0301-679X
VL - 182
JO - Tribology International
JF - Tribology International
M1 - 108349
ER -