Results 11 to 20 of about 207 (164)

Chemical analysis of additives included in fully formulated oils using high-performance liquid chromatography-tandem mass spectrometry. [PDF]

Rapid Commun Mass Spectrom
Rationale Fully formulated oils (FFOs) are chemically complex petrochemical products composed of base oil and additive mixtures that are employed in automotive engines to provide lubrication. In particular, the additive portion of FFOs is often precisely controlled to tailor the resultant formulation to a specific role.
Basham V, Hancock T, McKendrick J, Tessarolo N, Wicking C.   +4 more
europepmc   +2 more sources

Ti6Al4V-Bioglass-Copper Composites for Load-Bearing Implants. [PDF]

Adv Healthc Mater
We have designed and manufactured a novel Ti64‐based composite by adding 45S5 bioglass (BG) and copper (Cu). Adding BG on titanium improves wear resistance and biocompatibility, whereas Cu addition improves mechanical strength while providing inherent lifelong bacterial resistance.
Upadhayay L, White B, Bose S, Bandyopadhyay A.   +3 more
europepmc   +2 more sources

Atmospheric pressure matrix-assisted laser desorption/ionization mass spectrometry of engine oil additive components. [PDF]

Rapid Commun Mass Spectrom, 2022
Rationale The efficiency of lubricants strongly depends on the content of functional additives. In order to assess the chemical and structural changes taking place in the lubricating oil and its additives during operation, it is essential to develop a method for simple and prompt analysis.
Ramopoulou L, Widder L, Brenner J, Ristic A, Allmaier G.   +4 more
europepmc   +2 more sources

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

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

Lubricants, 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

Dynamic Processes of Self‐Organization in Nonstationary Conditions of Friction

Advances in Tribology, Volume 2023, Issue 1, 2023., 2023
Self‐organization mechanisms of metastable dissipative structures during friction depending on base and oil functional additives for hypoid gears are considered. Research was conducted on a software‐hardware complex with simulation of gears’ operation in rolling with slipping conditions in start‐stop mode.
Tareq M. A. Al-Quraan, Olha Ilina, Mukola Kulyk, Rudolf Mnatsakanov, Oksana Mikosianchyk, Volodumur Melnyk, Lijesh Koottaparambil   +6 more
wiley   +1 more source

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

Rapid 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, Tom Hancock, John McKendrick, Nathalia Tessarolo, Chrissie Wicking   +4 more
wiley   +1 more source

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

Lubrication 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, Fabrice Dassenoy, Maria Sarno, Adolfo Senatore   +3 more
wiley   +1 more source

ENHANCING THE TRIBOLOGICAL PROPERTIES OF BEARINGS IN MANIPULATORS [PDF]

Journal of the Egyptian Society of Tribology, 2020
The present work aims to enhance the friction and wear resistance of the bearings and joints in manipulator. The effect of dispersing lubricating oil by silica nanoparticles as well as graphene oxide nanoplatelets as antiwear and friction modifiers was ...
A. S. Ali, W. Y. Ali, R. A. Ibrahem
doaj   +1 more source

Influence of Soot on the Anti-Wear Property of MoDTC and ZDDP [PDF]

Cailiao Baohu, 2022
In order to investigate the influence of soot on the anti-wear property of molybdenum dialkyldithiocarbamate(MoDTC) and zinc dialkyldithiophosphate(ZDDP), the soot was added into different oil samples and then a four-ball machine friction experiment was ...
DONG Zengpeng, WANG Wen, LIU Hongliang
doaj   +1 more source