Knowledge mapping analysis of the track and hotspot of water lubrication: A scientometrics review

Xu, Renfan; Wu, Defa; Wang, Zhenyao; Deng, Yipan; Cheng, Qian; Pang, Hao; Wei, Wenshu; Liu, Yinshui

doi:10.1007/s40544-022-0666-x

Cited by 8 publications

(2 citation statements)

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“…Friction in life and production practices causes huge additional energy consumption and economic losses. 1 Superlubricity was predicted and proposed in the 1990s. 2 It was used to describe a theoretical sliding state in which friction or resistance to sliding almost vanishes.…”

Section: ■ Introductionmentioning

confidence: 99%

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Competition-Induced Macroscopic Superlubricity of Ionic Liquid Analogues by Hydroxyl Ligands Revealed by in Situ Raman

Liang,

Xia,

Liu

et al. 2024

Langmuir

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High load-bearing capacity is one of the crucial indicators for liquid superlubricants to move toward practicality. However, some of the current emerging systems not only have low contact pressures but also are highly susceptible to further degradation due to water adsorption and even superlubricity failure. Herein, a novel choline chloride-based ionic liquid analogues (ILAs) of a superlubricant with triethanolamine (TEOA) as the H-bond donor is reported for the first time; it obtains an ultralow coefficient of friction (0.005) and high loadbearing capacity (360 MPa, more than 2 times that of similar systems) due to adsorption of a small amount of water (<5 wt %) from the air. In situ Raman combined with 1 H NMR and FTIR techniques reveals that adsorbed water competes with the hydroxyl group of TEOA for coordination with Cl − , leading to the conversion of some strong H-bonds to weak H-bonds in ILAs; the localized strong H-bonds and weak H-bonds endow the ILAs with high load-bearing capacity and the formation of ultralow shearresistance sliding interfaces, respectively, under the shear motion. This study proposes a strategy to modulate the interactions between liquid species using adsorbed water from air as a competing ligand, which provides new insights into the design of ILAbased macroscopic liquid superlubricants with a high load-bearing capacity.

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Section: ■ Introductionmentioning

confidence: 99%

“…Friction in life and production practices causes huge additional energy consumption and economic losses . Superlubricity was predicted and proposed in the 1990s .…”

Section: Introductionmentioning

confidence: 99%