Results 41 to 50 of about 1,653 (213)

On the mechanism of ZDDP antiwear film formation [PDF]

, 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

Better Together: Photoredox/Copper Dual Catalysis in Atom Transfer Radical Polymerization

Angewandte Chemie, Volume 137, Issue 2, January 10, 2025.
A combination of Cu‐ATRP catalysis with photocatalysts (PCs) that absorb visible and/or NIR light exhibits synergistic action at the ppm/ppb concentration level. It leads to very well‐defined polymers with rates depending on the amount and quantum efficiency of PC but controlled polymer architecture defined by the Cu‐catalysts.
Julian Sobieski, Adam Gorczyński, Arman Moini Jazani, Gorkem Yilmaz, Krzysztof Matyjaszewski   +4 more
wiley   +2 more sources

A fundamental mechanism for carbon-film lubricity identified by means of ab initio molecular dynamics

, 2016
Different hypotheses have been proposed to explain the mechanism for the extremely low friction coefficient of carbon coatings and its undesired dependence on air humidity.
Kajita, Seiji, Righi, Maria Clelia
core   +1 more source

The influence of anti-wear additive ZDDP on doped and undoped diamond-like carbon coatings [PDF]

, 2015
Diamond-like carbon (DLC) coatings are recognised as a promising way to reduce friction and improve wear performance of automotive engine components. DLC coatings provide new possibilities in the improvement of the tribological performance of automotive ...
Bull, Crobu, Daniels, Dearnaley, Dearnley, Donnet, Donnet, Erdemir, Erdemir, Fuller, Grill, Grill, Grill, Hainsworth, Haque, Haque, Haque, Haque, Hauert, Hauert, Holmberg, Jiang, Kalin, Lanigan, Lawes, Leyland, Martin, Moulder, Oliver, Podgornik, Podgornik, Renondeau, Richardson, Robertson, Robertson, Robertson, Stachowiak, Vengudusamy   +37 more
core   +1 more source

Ab initio informed machine learning potential for tribochemistry and mechanochemistry: Application for eco–friendly gallate lubricant additive

Computational Materials Today
Mechanochemistry and tribochemistry processes involve multiple physical/chemical interactions induced by extreme conditions including molecular confinement, high temperatures and mechanical stress applied. Simulating these processes by molecular dynamics
Huong T.T. Ta, Mauro Ferrario, Sophie Loehlé, M. Clelia Righi   +3 more
doaj   +1 more source

Tribochemistry of graphene on iron and its possible role in lubrication of steel

, 2016
Recent tribological experiments revealed that graphene is able to lubricate macroscale steel-on-steel sliding contacts very effectively both in dry and humid conditions.
Restuccia, Paolo, Righi, M. C.
core   +1 more source

Ab Initio Molecular Dynamics Simulation of Tribochemical Reactions Involving Phosphorus Additives at Sliding Iron Interfaces

Lubricants, 2018
We performed, for the first time to our knowledge, fully ab initio molecular dynamics simulations of additive tribochemistry in boundary lubrication conditions.
Sophie Loehlé, Maria Clelia Righi
doaj   +1 more source

New insights on the decomposition mechanism of Molybdenum DialkyldiThioCarbamate (MoDTC): a Raman spectroscopic study [PDF]

, 2016
Molybdenum DialkyldiThioCarbamate (MoDTC) is a friction modifier that has been used in automotive engines for many years. However, its exact decomposition mechanism within tribocontacts is not fully understood.
Khaemba, DN, Morina, A, Neville, A
core   +1 more source

Dry‐Films Containing Vanadium Tetrasulfide as Cathode Active Material for Solid‐State Batteries with High Rate Capability

Batteries &Supercaps, Volume 9, Issue 3, March 2026.
The graphical abstract illustrates the effect of low and high energy ball milling (LBM, HBM) on VS4 composite cathodes with solid electrolyte, showing the morphological evolution. This study presents a comprehensive investigation of vanadium tetrasulfide (VS4) cathodes for solid‐state lithium batteries, utilizing innovative material characterization ...
Pascal Seete, Felix Hippauf, Susanne Dörfler, Holger Althues, Niklas M. Abke, Simon Wiemers‐Meyer, Kentaro Kuratani, Tomonari Takeuchi, Hikari Sakaebe, Martin Winter, Stefan Kaskel   +10 more
wiley   +1 more source

Investigation of the effect of humidity on the wear of cobalt metal

Friction
Cobalt-based (Co-based) alloys are widely used in aerospace and machinery applications because of their excellent mechanical properties, where extraordinary wear performance is also desirable to ensure stable operation.
Peng Gao, Jing Liang, Zhenghao Wei, Jiongchong Fang, Zhongdu He, Wei Wu, Haifeng Gao, Guosong Zeng   +7 more
doaj   +1 more source