Results 21 to 30 of about 957 (204)

Detailed chemical analysis of a fully formulated oil using dielectric barrier discharge ionisation–mass spectrometry

open access: yesRapid Communications in Mass Spectrometry, Volume 36, Issue 14, 30 July 2022., 2022
Rationale Fully formulated oils (FFOs) are integral to automotive lubrication; however, detailed compositional analysis is challenging due to high levels of chemical complexity. In particular, existing mass spectrometric approaches often target particular FFO components, leading to poor analytical coverage of the overall formulation, with increased ...
Vincent Basham   +4 more
wiley   +1 more source

Nano- and Micro-Tribological Investigations of Boundary Layers on Axial Bearing Washers Tested under WEC Critical Conditions

open access: yesLubricants, 2022
The formation of boundary layers on bearing surfaces due to the operational conditions has a significant influence on bearing lifetimes and frictional properties.
Florian Pape
doaj   +1 more source

A review on potentials and challenges of nanolubricants as promising lubricants for electric vehicles

open access: yesLubrication Science, Volume 34, Issue 1, Page 1-29, January 2022., 2022
Abstract The most remarkable difference between electric vehicles (EVs) and conventional ones is the fuel burning dependency of the internal combustion engine, while the emerging EVs operate on electric motors. These alternations create staggering shifts in both lubricants' market demand and performance specifications.
Waleed Ahmed Abdalglil Mustafa   +3 more
wiley   +1 more source

Zinc Dialkyldithiophosphate Additive Adsorption on Carbon Black Particles [PDF]

open access: yesTribology Letters, 2018
Soot is known to cause high wear in engine components and this is a problem with engine oils between extended drain intervals. Although several wear mechanisms have been suggested, exact soot-induced wear mechanisms are still not fully understood. This study aims to investigate the additive adsorption mechanism (specifically anti-wear additive) on ...
Motamen Salehi, F, Morina, A, Neville, A
openaire   +3 more sources

Investigation of ionic liquids with and without graphene as lubricant additive for metal/metal and metal/PEEK contacts over a wide temperature range

open access: yesLubrication Science, Volume 33, Issue 2, Page 100-111, March 2021., 2021
Abstract The aim of the work is to improve tribological properties of an ATF oil by means of additives. Two ionic liquids (IL) and one IL with 0.1 wt.% graphene were chosen as candidates. The ILs were selected because of their promising surface interactions and proven synergy with anti‐wear additives.
Tobias Amann   +6 more
wiley   +1 more source

In-situ Raman-SLIM multi-analytical observation for the process of the chemical composition and film thickness of tribofilms lubricated with a fully formulated oil

open access: yesNihon Kikai Gakkai ronbunshu, 2020
In this study, the tribofilm formation process lubricated with an engine formulated oil was investigated using a lab-built in-situ Raman-SLIM (Spacing Layer Imaging Method) multi-analytical tribometer.
Hikaru OKUBO   +2 more
doaj   +1 more source

Friction Reduction by Laser Irradiation for a Friction System Using Bearing Steel and Aluminum Alloy in Engine Oil

open access: yesTribology Online, 2022
Aluminum alloy sliding components are widely used in internal combustion engines. However, aluminum easily adheres to the countersurface, resulting in high friction.
Kento Ihara, Koshi Adachi
doaj   +1 more source

On the mechanism of ZDDP antiwear film formation [PDF]

open access: yes, 2016
Zinc dialkyldithiophosphate additives are used to control wear and inhibit oxidation in almost all engine oils as well as many other types of lubricant. They limit wear primarily by forming a thick, protective, phosphate glass-based tribofilm on rubbing ...
Spikes, HA, Zhang, J
core   +1 more source

Substituent effects on the mechanochemical response of zinc dialkyldithiophosphate

open access: yesMolecular Systems Design & Engineering, 2022
We show how the tribofilm growth rate of zinc dialkyldithiophosphate (ZDDP) changes for different alkyl substitutents under carefully controlled temperature and stress conditions.
Jie Zhang, James P. Ewen, Hugh A. Spikes
openaire   +3 more sources

Tribological Behaviour of PVD Coatings Lubricated with a FAP− Anion-Based Ionic Liquid Used as an Additive

open access: yesLubricants, 2016
This paper studies 1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl) trifluorophosphate ionic liquid ([BMP][FAP]) as a 1 wt% additive to a polyalphaolefin (PAO 6) in the lubrication of CrN and TiN PVD coatings.
José-Luis Viesca   +5 more
doaj   +1 more source

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