Results 51 to 60 of about 207 (164)

Investigation of 1,3-Diketone and Nano-Copper Additives for Enhancing Boundary Lubrication Performance

Journal of Marine Science and Engineering
In this work, 1,3-diketone synthesized via the Claisen condensation method and nano-copper particles modified by the Brust–Schiffrin method were added into a commercial marine medium-speed diesel engine cylinder piston oil to evaluate their effects on ...
Jingsi Wang, Dezhi Teng, Jiawei Fan, Xi Zhang, Qihang Cui, Ke Li, Pay Jun Liew   +6 more
doaj   +1 more source

Comparing Tribochemical Film Formation and Durability at Steel and CrN Coating Interface in Boundary Lubrication

Tribology Online, 2010
One of the main challenges that engine oil manufacturers are now facing is to reduce friction losses while at the same time increasing the durability of engine components.
Ardian Morina, Tabassumul Haque, Anne Neville   +2 more
doaj   +1 more source

The synergistic effect of novel anti-wear additive 1,3,4-thiadiazole mixed ammonium salt and MoDTC on tribological properties of FeCoCrNiMn alloy

Journal of Materials Research and Technology
To meet the increasingly stringent environmental requirements, we propose incorporating nitrogen-containing compounds into the anti-wear additives in order to minimize the use of sulfur and phosphorus elements.
Dongya Zhang, Xiaoyu Suo, Jingjie Wang, Yunfei Wang, Fengqi Fan, Liping Wang   +5 more
doaj   +1 more source

Water-Induced Lubrication Challenges in Engine Oils: A Review with H₂-ICE as a Proxy for Alternative-Fuel Engines

Lubricants
Hydrogen-fueled internal combustion engines (H2-ICEs) impose unique challenges on engine lubrication because water is an inevitable combustion product.
Le Ma, Yunfeng Zang, Zhancheng Dou, Lingyan Guo, Weimin Li, Qicheng Wang, Xinming Li, Haichao Liu   +7 more
doaj   +1 more source

Prediction of Iron Wear Metal Concentration in Used Engine Oils from FT-IR Spectra Using Partial Least Squares Regression

Lubricants
Wear metal monitoring is an important component of lubricant condition monitoring but commonly relies on elemental techniques such as inductively coupled plasma optical emission spectroscopy (ICP-OES), which require dedicated laboratory infrastructure ...
Adam Agocs, Georg Vorlaufer, Marcella Frauscher, Charlotte Besser   +3 more
doaj   +1 more source

Positive Antiwear Interaction Between ZDDP and CNTs, GNPs and FLGs Under Boundary Lubrication

Lubricants
Industrial gear contacts operate under mixed-to-boundary lubrication where reliable antiwear protection is essential. This study assesses whether carbon nanomaterials can enhance the performance of zinc dialkyldithiophosphate (ZDDP) under severe ...
Juan Pablo Abdelnabe, Walter Roberto Tuckart, Eduardo Tomanik, Wania Christinelli, Germán Prieto   +4 more
doaj   +1 more source

Thermal and Hydrolytic Stability of Dithiophophoric Acids Stabilité thermique et hydrolytique des acides dithiophosphoriques

Oil & Gas Science and Technology, 2006
The thermal and hydrolytic stability of dibutyl-, diisobutyl- and diisooctyldithiophosphoric acids have been studied in the range of 40-80°C. The reaction progress was followed by the H2S evolution kinetics in volumetric equipment at constant pressure ...
Ivanov S. K., Karshalykov C., Litovchenko N. R., Kupko G. G.   +3 more
doaj   +1 more source

Lubricities of Environmentally Acceptable Lubricants with Zinc Dialkyldithiophosphate and Dibenzyl Disulfide on Tribological Properties of Plasma Electrolytic Oxidation Coated A6061-T6 Alloy under Mixed/Boundary Lubrication

Tribology Online, 2015
3 different base-stocks (poly-α-olefin, polypropylene glycol and unsaturated TMP ester) and additionally formulations with 2 different additives (1 mass% ZnDTP or 1 mass% dibenzyl disulfide (DBDS)) were used as lubricants to evaluate the tribological ...
Takuya Nakase, Shinji Kato, Mathias Woydt, Shinya Sasaki   +3 more
doaj   +1 more source

A Comprehensive Review of Lubricant Behavior in Internal Combustion, Hybrid, and Electric Vehicles: Thermal Demands, Electrical Constraints, and Material Effects

Lubricants
The global transition from internal combustion engines (ICEs) to hybrid (HEVs) and electric vehicles (EVs) is fundamentally reshaping lubricant design requirements, driven by evolving thermal demands, electrical constraints, and material compatibility ...
Subin Antony Jose, Erick Perez-Perez, Terrence D. Silva, Kaden Syme, Zane Westom, Aidan Willis, Pradeep L. Menezes   +6 more
doaj   +1 more source

Numerical Rheological Modeling of Thin Lubricating Oil Films Considering Polymolecular Adsorption and ZDDP

Проблеми трибології
A numerical rheological model of a thin lubricating oil film was developed and verified to account for polymolecular adsorption, pseudo-solid adsorption layers, and the influence of zinc dialkyldithiophosphate (ZDDP) on the rheological properties of the ...
I. Drach, M. Dykha, D. Tovstiuk
doaj   +1 more source