Results 101 to 110 of about 896 (199)

Towards Phosphorus Free Ionic Liquid Anti-Wear Lubricant Additives

Lubricants, 2016
The development of improved anti-wear additives would enable the use of lower viscosity oils that would lead to improved efficiency. Ionic liquids have the potential to be this type of new anti-wear additive.
Anthony E. Somers, Ruhamah Yunis, Michel B. Armand, Jennifer M. Pringle, Douglas R. MacFarlane, Maria Forsyth   +5 more
doaj   +1 more source

Mechanisms of ZDDP—An Update

Tribology Letters
Abstract This paper describes how research over the last 20 years has advanced our understanding of the mechanisms of action of ZDDP, especially with respect to tribofilm formation. We now know that ZDDP tribofilm formation is promoted by applied shear stress and this explains many of the features of these films.
openaire   +1 more source

Effect of Base Oil Polarity on Micro and Nano Friction Behaviour of Base Oil +ZDDP Solutions

, 2009
Ball-on-disc tribo tests and atomic force microscopy (AFM) were used to analyze the effect of base oil polarity on the friction behaviour of steel-steel contacts lubricated with base oil + zinc dialkyldithiophosphate (ZDDP) solutions.
Pasaribu, R., Naveira-Suarez, A., Bogus, A.M., Gebeshuber, I.C.   +3 more
core   +3 more sources

Enhanced Growth of ZDDP-Based Tribofilms on Laser-Interference Patterned Cylinder Roller Bearings

Lubricants, 2017
Laser surface texturing has been successfully applied in the past to various machine elements in order to improve their tribological performance. In this study, direct laser interference patterning was used to produce periodic cross-like surface patterns
Chia-Jui Hsu, Andreas Stratmann, Andreas Rosenkranz, Carsten Gachot   +3 more
doaj   +1 more source

Oil-soluble ionic liquids as antiwear and extreme pressure additives in poly-α-olefin for steel/steel contacts

Friction, 2017
To enhance the lubricating and extreme pressure (EP) performance of base oils, two types of oil-soluble ionic liquids (ILs) with similar anion albeit dissimilar cations were synthesized. The physical properties of the prepared ILs were measured.
Guowei Huang, Qiangliang Yu, Zhengfeng Ma, Meirong Cai, Feng Zhou, Weimin Liu   +5 more
doaj   +1 more source

Experimental simulation of chemical reactions between ZDDP tribofilms and steel surfaces during friction processes

, 2006
International audienceFriction tests are performed in a controlled environment (Ultra High Vacuum), between steel surfaces and a ZDDP tribofilm at different contact severities.
Martin, J.M., Minfray, C., Le Mogne, Thierry, Lubrecht, Ton   +3 more
core   +1 more source

Tribological Behavior of Anodized Aluminum Oxide (AAO) Under the Addition of PAO6 Lubrication with Nano-Alumina

Lubricants
Anodizing can generate porous wear-resistant layers, which can act as reservoirs for gradually releasing lubricants. Studies on the formation of zinc dialkyl dithiophosphate (ZDDP) tribofilms in non-ferrous metals are relatively rare. Furthermore, adding
Marina C. Vasco, Rodrigo L. Villanova, Giuseppe Pintaude   +2 more
doaj   +1 more source

The tribological behaviour of a novel triazine derivative and its combination with ZDDP as additive in mineral oil

, 2011
PurposeThe purpose of the research was to test whether the novel synthesized additive TEAT can be a substitution for the traditional additive ZDDP partly or entirely in mineral oil.Design/methodology/approachThe extreme pressure, antiwear (AW) and ...
Hua Wu, Chenyan Ma, Jianchang Li, Lulu Peng, Tianhui Ren   +4 more
core   +1 more source

Microstructural and Chemical Characterization of the Tribolayer Formation in Highly Loaded Cylindrical Roller Thrust Bearings

Lubricants, 2016
Zinc dithiophosphates (ZDDP) have been widely applied in automobile industry for over 70 years as a lubricant additive for wear protection. Tribolayers have been described as blue- and brown-colored layers on surfaces observed by microscopical ...
Carsten Gachot, ChiaJui Hsu, Sebastián Suárez, Philipp Grützmacher, Andreas Rosenkranz, Andreas Stratmann, Georg Jacobs   +6 more
doaj   +1 more source

Wear preventive and friction of trans-esterified waste cooking oil enhanced zinc dialkyl dithiophospate (ZDDP) [PDF]

, 2023
Utilization of the vegetable oil and animal fats in industrial application as lubricants has drawn attention from researchers and practitioners. Improper disposal of waste cooking oil is considered to affect the environment. The purpose of this work is
Zainuddin, M.N.I., Herawan, S.G. R, Ahmadin, A., Tofrowaih, Khairul Amri, Rahmah, A.U., Lubis, A.M.H.S.   +5 more
core