Results 61 to 70 of about 18,338 (155)

Contact mechanics and friction: Role of adhesion

Friction
This paper presents an overview of the role of adhesion in various tribological phenomena. We discuss (1) adhesion and adhesive hysteresis in rough contacts, (2) adhesive contribution to dry friction, (3) properties of adhesive contacts under tangential ...
Valentin L. Popov, Qiang Li, Iakov A. Lyashenko   +2 more
doaj   +1 more source

Multi-asperity micro-spherical interfaces enabling macroscale superlubricity under various atmospheric conditions

Superlubricity (μ < 0.01) could revolutionize energy-efficient technologies but remains confined to nanoscale or controlled environments. Here, we propose a universal strategy that overcomes these barriers by incorporating numerous microspheres to ...
Zhonghong Lei, Kangxun Deng, Han Guo, Chengbing Wang, Li Qiang, Jing Shi, Li Tan, Weike Wang, Hang Li   +8 more
core   +1 more source

Excellent Water Lubrication Additives for Silicon Nitride To Achieve Superlubricity under Extreme Conditions

, 2019
Superlubricity has been recognized as the future of tribology. However, it is hard to achieve superlubricity under extreme conditions such as a high load and low sliding speed on the macroscale.
Yuxiao Cui (7830983), Tianyi Sui (7830980), Shuai Yan (290818), Mei Ding (243858), Xibei Liu (4861423), Bin Lin (302181)   +5 more
core   +1 more source

Superlubricity enabled by graphene nanocomposite film on carbon-coated AISI 1045 steel

Materials & Design
This paper presents a low-cost and innovative method for treating high temperature biowaste to create an ultra-low friction carbon-based coating on AISI 1045 steel.
Tabiri Kwayie Asumadu, Mobin Vandadi, Desmond Edem Primus Klenam, Kwadwo Mensah-Darkwa, Kwadwo Adinkrah-Appiah, Emmanuel Gikunoo, Nima Rahbar, Samuel Kwofie, Winston Oluwole Soboyejo   +8 more
doaj   +1 more source

Torque and twist against superlubricity [PDF]

, 2008
Superlubricity between incommensurate surfaces provides a desired low-friction state essential for the function of small-scale machines. Here we demonstrate experimentally and theoretically that superlubricity in contacts lubricated by ...
Klafter, Joseph, Urbakh, Michael, Filippov, Alexander E., Dienwiebel, Martin, Frenken, Joost W. M.   +4 more
core   +1 more source

Multidentate Hydrogen‐Bonded Semisolid Oil‐Based Lubricants for Durable Macroscale Superlubricity Across Ambient and Vacuum Environments

Macroscale superlubricity (µ < 0.01) has attracted extensive interest for minimizing friction and wear; however, oil‐based systems capable of maintaining stable superlubricity under harsh environments remain rare due to creep, leakage, and poor vacuum
Xin Wang, Weifeng Bu, Liqiang Zhang, Feng Zhou, Guanlin Ren, Qiulong Gao, Liucheng Wang, Jian Liu, Daoai Wang, Changhe Du   +9 more
core   +1 more source

Manipulating the conversion of nanoscale wear debris into tribofilm for wear reduction of steel

Friction
Wear debris particles play a crucial role in frictional interfaces. Conventional understanding holds that debris accumulation causes severe wear.
Hujun Wang, Zhengcan Xie, Hongcai Huang, Wei Liu, Jing Zheng, Zhongrong Zhou   +5 more
doaj   +1 more source

Macroscale superlubricity enabled by the synergy effect of oil and S–C co-infiltration coating on 20CrMnTi steel surface

Friction
To explore macroscopic superlubricity in industrial fields, S–C co-infiltration treatment refers to the sulfurization of carburized gear steel to achieve a synergistic lubrication effect. The carburized layer at the bottom provides high-strength support.
Guotao Zhang, Lexin Song, Zhen Ma, Zhaochang Wang, Baohong Tong, Yanguo Yin   +5 more
doaj   +1 more source

Role of surface roughness in superlubricity [PDF]

, 2006
We study the sliding of elastic solids in adhesive contact with flat and rough interfaces. We consider the dependence of the sliding friction on the elastic modulus of the solids.
Samoilov, V. N., Persson, B. N. J., Tartaglino, U., U Tartaglino, V N Samoilov, B N J Persson   +5 more
core   +1 more source

Superlubricity of polyethylene glycol solutions: Running-in effects, thickness changes, and rheology

Friction
The role of additives in liquid superlubricity is regarded as a crucial element of the running-in process due to their role in reducing friction. Nevertheless, there has been minor investigation into rheological changes that occur during the process ...
Tomáš Poláček, Martin Kadlec, Jiří Smilek, Martin Hartl, Petr Šperka   +4 more
doaj   +1 more source