Results 21 to 30 of about 750 (171)

Se Nanopowder Conversion into Lubricious 2D Selenide Layers by Tribochemical Reactions

Advanced Materials, Volume 35, Issue 42, October 19, 2023., 2023
A simple sprinkling of Se nanopowders onto sliding Mo and W thin films leads to the tribochemical in operando formation of lubricious 2D selenides. Due to the thermal and vacuum stability of the Se nanopowders they can be used to replenish sliding components with solid lubricants, avoiding the long‐lasting problem of transition metal ...
Philipp G. Grützmacher, Michele Cutini, Edoardo Marquis, Manel Rodríguez Ripoll, Helmut Riedl, Philip Kutrowatz, Stefan Bug, Chia‐Jui Hsu, Johannes Bernardi, Carsten Gachot, Ali Erdemir, Maria Clelia Righi   +11 more
wiley   +1 more source

Energy‐Conserved Hydrodynamic Lubricated Components with Wall Slippage

International Journal of Rotating Machinery, Volume 2023, Issue 1, 2023., 2023
The hydrodynamic thrust slider and journal bearings as well as hydrodynamic lubricated gears with the merit of energy conservation by the wall slippage are reviewed. The principle for designing these hydrodynamic contacts is to artificially set the wall slippage on the stationary surface in the hydrodynamic inlet zone.
Xiaoxu Huang, Yongbin Zhang, Abraham Engeda   +2 more
wiley   +1 more source

Influence of NO x and Air on the Ageing Behaviour of MoDTC [PDF]

Tribology Letters, 2017
Molybdenum dialkyldithiocarbamates (MoDTCs) are very effective friction modifier additives for use in engine oils and other lubricants. However, as engine oils age during extended drain intervals, MoDTCs can lose some or all of their ability to reduce friction and this is generally believed to result from their oxidative degradation.
A. Ponjavic, T. Lemaigre, M. Southby, H. A. Spikes   +3 more
openaire   +3 more sources

Low Friction Achieved on Plasma Electrolytic Oxidized TC4 Alloy in the Presence of PAO Base Oil Containing MoDTC

Lubricants, 2022
Surface engineering is required to improve the poor lubrication performance of titanium alloys in many applications. In this study, an oxide coating with high-hardness was created on TC4 titanium alloy by using plasma electrolytic oxidation (PEO).
Huilai Sun, Shengrui Zhou, Lupeng Shao, Junji Luan, Yong Wan, Chao Wang   +5 more
doaj   +1 more source

Formation mechanisms of zinc, molybdenum, sulfur and phosphorus containing reaction layers on a diamond‐like carbon (DLC) coating Bildungsmechanismen von zink‐, molybdän‐, schwefel‐ und phosphorhaltigen tribochemischen Reaktionsschichten auf einer diamantähnlichen Kohlenstoffbeschichtung (DLC)

Materialwissenschaft und Werkstofftechnik, Volume 51, Issue 7, Page 1009-1030, July 2020., 2020
Tribochemical reactive formed layers on diamond‐like carbon (DLC) after tribological testing were analyzed. Hereby, the formation of zinc, molybdenum, sulfur and phosphorus containing reaction layers could be identified using Raman spectroscopy and scanning electron microscopy.
K. Bobzin, T. Brögelmann, C. Kalscheuer, M. Thiex   +3 more
wiley   +1 more source

Friction Modelling in Boundary Lubrication Considering the Effect of MoDTC and ZDDP in Engine Oils

Tribology Online, 2011
A predictive friction model has been developed in boundary lubrication conditions to understand the sensitivity of the model to molybdenum dithiocarbamate (MoDTC), a friction modifying additive and zinc dialkyldithiophosphate (ZDDP), an antiwear additive
Rupesh Roshan, Martin Priest, Anne Neville, Ardian Morina, Xin Xia, Chris P. Warrens, Marc J. Payne   +6 more
doaj   +1 more source

Analysis of Wear Track on DLC Coatings after Sliding with MoDTC-Containing Lubricants

Tribology Online, 2017
Wear of DLC coating has been great concern in DLC/Steel sliding surface lubricated by molybdenum dithiocarbamate (MoDTC) containing lubricants. However, in order to design lubrication system with DLC and MoDTC, the mechanism of this issue is needed to be
Kenji Ohara, Kiyoshi Hanyuda, Yasushi Kawamura, Kentaro Omura, Imari Kameda, Noritsugu Umehara, Hiroyuki Kousaka   +6 more
doaj   +1 more source

Effect of surface roughness on friction behaviour of steel under boundary lubrication [PDF]

, 2014
The friction behaviour of grinded and polished surfaces was evaluated by using a reciprocal sliding tester under lubrication with PAO, PAO + ZnDTP and PAO + ZnDTP + MoDTC.
Atherton, MA, Sasaki, C, Sasaki, S, Stolarski, T, Tsuboi, R, Yamaguchi, K   +5 more
core   +1 more source

Influence of Succinimide Dispersants on Film Formation, Friction and Antiwear Properties of Zinc Dialkyl Dithiophosphate [PDF]

, 2012
ZDDP (zinc dialkyldithiophosphate) is arguably the most successful antiwear additive ever employed in crankcase engine lubricants. It was originally used as an antioxidant and shortly afterwards recognized for its antiwear and extreme pressure ...
Zhang, Jie, Zhang, Jie
core   +1 more source

A methodology for Raman characterisation of MoDTC tribofilms and its application in investigating the influence of surface chemistry on friction performance of MoDTC lubricants [PDF]

Tribology Letters, 2015
In this study, Raman spectroscopy has been employed to understand the influence of surface chemistry on friction in a tribocontact. Tribotests were conducted using molybdenum dialkyldithiocarbamate (MoDTC) lubricant in a steel/steel sliding contact. Firstly, surface chemistry in the high-friction regime, at the beginning of the test, and in the low ...
Doris N. Khaemba, Anne Neville, Ardian Morina   +2 more
openaire   +1 more source