Results 71 to 80 of about 18,338 (155)

Robust and durable superlubricity enabled by carboxylated graphene quantum dots in lubricated steel contacts [PDF]

Achieving macroscale superlubricity on engineering steel by utilizing aqueous green lubricants has gained growing interest, given its substantial potential to reduce energy consumption and carbon footprint.
Dražić, G., Nadeem, I., Dražić, Goran, Malok, M., Morina, Ardian, Finšgar, M., Nadeem, Irfan, Morina, A., Finšgar, Matjaž, Malok, Matjaž, Kalin, Mitjan, Kalin, M.   +11 more
core   +1 more source

Differential hydration lubrication performance of polyelectrolyte-modified UHMWPE promoted by diverse charge characteristics

Friction
Hydrated ions can achieve exceptional hydration lubrication through their adsorption onto oppositely charged surfaces. Similarly, the charge characteristics of polyelectrolytes are expected to significantly impact the hydration lubrication performance of
Jianing Xu, Tianyi Han, Chenhui Zhang, Jianbin Luo   +3 more
doaj   +1 more source

Sliding Over Graphene Grain Boundaries: A Step Towards Macroscale Superlubricity

, 2020
In light of the race towards macroscale superlubricity of graphitic contacts, the effect of grain boundaries on their frictional properties becomes of central importance. Here, we elucidate the unique frictional mechanisms characterizing topological defects along typical grain boundaries that can vary from being nearly flat to highly corrugated ...
Gao, Xiang, Ouyang, Wengen, Hod, Oded, Urbakh, Michael   +3 more
openaire   +2 more sources

Combination of diketone and PAO to achieve macroscale oil-based superlubricity at relative high contact pressures

Friction
1-(4-ethylphenyl)-nonane-1,3-dione (0206) is an oil-soluble liquid molecule with rod-like structure. In this study, the chelate (0206-Fe) with octahedral structure was prepared by the reaction of ferric chloride and 1,3-diketone. The experimental results
Shaonan Du, Chenhui Zhang, Zhi Luo
doaj   +1 more source

Emerging superlubricity: A review of the state of the art and perspectives on future research [PDF]

, 2018
We present a review of superlubricity: the state of ultra-low friction between surfaces in relative motion. Various approaches to achieving this state are considered in a broad sense, including structural superlubricity, superlubricity via normal force ...
Mohammad R. Vazirisereshk, Mehmet Z. Baykara, Ashlie Martini, Martini, Ashlie, Vazirisereshk, Mohammad R, Baykara, Mehmet Z   +5 more
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Macroscale Superlubricity of Hydrated Anions in the Boundary Lubrication Regime

Cations can achieve excellent hydration lubrication at smooth interfaces under both microscale and macroscale conditions due to the boundary layer composed of hydration shells surrounding charges, but what about anions?
Shumin Zhang (187205), Sudesh Singh (16884919), Chenhui Zhang (2321875), Chuan Sun (276429), Jianbin Luo (1782397), Mingbo Zhao (2282779), Wanxing Xu (6102782), Ruiqi Zhao (2038144), Tianyi Han (1623979)   +8 more
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Origins of Superlubricity Promoted by Hydrated Multivalent Ions

, 2019
Strong hydration repulsion exists between two negatively charged surfaces in the alkali metal salt solutions, together with the fluid response to the shear of hydration layers, leading to superlubricity.
Xinchun Chen (135545), Jiyang Zhang (43567), Jinjin Li (849002), Chenhui Zhang (2321875), Jianbin Luo (1782397), Shihua Yuan (8148321), Tianyi Han (1623979)   +6 more
core   +2 more sources

Macroscale Superlubricity Induced by MXene/MoS₂ Nanocomposites on Rough Steel Surfaces under High Contact Stresses

Toward the goal of achieving superlubricity, or near-zero friction, in industrially relevant material systems, solution-processed multilayer Ti3C2Tx-MoS2 blends are spray-coated onto rough 52100-grade steel surfaces as a solid lubricant. The tribological
Diana Berman (3722710), Dario Zambrano (14505191), Elena V. Shevchenko (1278324), Ali Macknojia (14505188), Andreas Rosenkranz (6904382), Aditya Ayyagari (14486906)   +5 more
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Superlubricity of Black Phosphorus as Lubricant Additive

, 2018
Superlubricity is defined as a sliding regime in which friction, or the resistance to sliding of two relatively moving surfaces, almost vanishes. From a practical point of view, the development and use of new materials that can enable superlubricity ...
Guoxin Xie (1782394), Jianbin Luo, Jianbin Luo (1782397), Wei Wang (17594), Wei Wang, Guoxin Xie   +5 more
core   +1 more source

Phase transition structural superlubricity

Structural superlubricity refers to a state with almost vanishing friction and wear between crystalline surfaces in incommensurate configurations. However, thus far, this phenomenon has been observed only at solid-solid interfaces.
Yu, Xiaohui,, Fang, Dazhen,, Zhang, Chenhui,, Zeng, Qingdao,, Cao, Yuwei,, Zhang, He,, Chen, Guangyan,, Jin, Bao,, Zhao, Jun,, He, Yongyong,, Meng, Ting,, Zhang, Minyi,, Luo, Jianbin,   +12 more
core   +1 more source