Results 1 to 10 of about 3,603 (225)

ZDDP Tribofilm Formation on Non-Ferrous Surfaces

Tribology Online, 2020
The current trend for using lower viscosity lubricants with the aim of improving fuel economy of mechanical systems means that machine components are required to operate for longer periods in thin oil film, boundary and mixed lubrication conditions ...
Mao Ueda, Amir Kadiric, Hugh Spikes
doaj   +5 more sources

In-situ catalysis of green lubricants into graphitic carbon by iron single atoms to reduce friction and wear [PDF]

Nature Communications
Reducing friction and wear in moving mechanical systems is essential for their intended functionality. This is currently accomplished by using a large variety of anti-friction and anti-wear additives, that usually contain sulfur and phosphorous both of ...
Wei Song, Chongyang Zeng, Xiaoyang Ma, Janet S. S. Wong, Chuke Ouyang, Shouyi Sun, Weiwei Zhang, Jianbin Luo, Xing Chen, Jinjin Li   +9 more
doaj   +2 more sources

Evaluation of Mechanical Characteristics of Tribofilm Formed on the Surface of Metal Material Due to Friction under Lubrication with Automatic Transmission Fluid

Tribology Online, 2021
In this study, nano-scratch tests were conducted using atomic force microscope (AFM) to clarify the hardness of a tribofilm derived from an additive (Fluid A or Fluid B in automatic-transmission fluid) formed on an SKS3 cold work tool steel substrate ...
Takayuki Tokoroyama, Takashi Nishimoto, Yasuhiro Murakami, Akiyuki Honda, Hideaki Mitsui, Yusuke Terai, Motoyuki Murashima, Woo-Young Lee, Noritsugu Umehara   +8 more
doaj   +1 more source

Wear mechanism and evolution of tribofilm of ceramic on steel pairs under ester oil lubrication in wide temperature range

Journal of Materials Research and Technology, 2023
The ceramic-steel-pentaerythritol ester system has a broad application prospect under high temperature conditions, which are respectively in the fields of aviation, aerospace and advanced equipment manufacturing. However, a comprehensive understanding of
Lvzhou Li, Pengpeng Bai, Xiangli Wen, Xue Zhou, Kai Ma, Yonggang Meng, Jianning Ding, Yu Tian   +7 more
doaj   +1 more source

Temperature dependence of molybdenum dialkyl dithiocarbamate (MoDTC) tribofilms via time-resolved Raman spectroscopy

Scientific Reports, 2021
Molybdenum dialkyl dithiocarbamate (MoDTC) is a friction reducing additive commonly used in lubricants. MoDTC works by forming a low-friction molybdenum disulphide (MoS2) film (tribofilm) on rubbed surfaces.
Carlos E. Garcia, Mao Ueda, Hugh Spikes, Janet S. S. Wong   +3 more
doaj   +1 more source

Synthesis of ultrathin two-dimensional metal-organic framework nanosheets for lubricant additives

Materials & Design, 2022
Two-dimension (2D) nano materials are diffusely employed as lubricant additives. In this paper, three kinds of ultrathin 2D metal-organic framework (MOF) nanosheets with different metal ions (Ni2+, Zn2+, and Cu2+) were successfully synthesized by ...
Hongxiang Yu, Xiaolong Liu, Weisheng Meng, Zhiwen Zheng, Dan Qiao, Dapeng Feng, Zhenbin Gong, Guojun Dong   +7 more
doaj   +1 more source

Mechanisms behind the environmental sensitivity of carbon fiber reinforced polytetrafluoroethylene (PTFE)

Friction, 2023
Carbon fiber reinforced polytetrafluoroethylene (CF/PTFE) composites are known for their exceptional tribological performance when sliding against steel or cast iron in inert gas environments.
P. Johansson, P. Marklund, M. Björling, Y. Shi   +3 more
doaj   +1 more source

Wear and friction of TiAlN/VN coatings against Al2O3 in air at room and elevated temperatures [PDF]

, 2010
TiAlN/VN multilayer coatings exhibit excellent dry sliding wear resistance and low friction coefficient, reported to be associated with the formation of self-lubricating V2O5.
Hovsepian, Papken, Luo, Q., Ojeda, J. J., Rainforth, W. M., Romero-Gonzalez, M. E., Zhou, Z.   +5 more
core   +1 more source

Molecular dynamics simulation of the Stribeck curve: Boundary lubrication, mixed lubrication, and hydrodynamic lubrication on the atomistic level

Friction, 2023
Lubricated contact processes are studied using classical molecular dynamics simulations for determining the entire range of the Stribeck curve. Therefore, the lateral movement of two solid bodies at different gap height are studied. In each simulation, a
Simon Stephan, Sebastian Schmitt, Hans Hasse, Herbert M. Urbassek   +3 more
doaj   +1 more source

Structure and wear mechanisms of nano-structured TiAlCN/VCN multilayer coatings [PDF]

, 2007
Dry sliding wear of transition metal nitride coatings usually results in a dense and strongly adhered tribofilm on the worn surface. This paper presents detailed electron microscopy and Raman spectroscopy characterizations of the microstructure, a newly ...
Ajayi, Barshilia, Biswas, Constable, Donnet, Ehiasarian, Erdemir, Hovsepian, Hovsepian, Jamal, Lahres, Luo, Luo, Luo, Luo, Luo, Münz   +16 more
core   +1 more source