Results 41 to 50 of about 1,618 (199)

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

Is Tribology Approaching Its Golden Age? Grand Challenges in Engineering Education and Tribological Research

Frontiers in Mechanical Engineering, 2018
In spite of its obvious importance, the subject of tribology has relatively low visibility in the engineering community and among the general public.
Valentin L. Popov
doaj   +1 more source

Insigths into the tribochemistry of silicon-doped carbon based films by ab initio analysis of water/surface interactions

, 2015
Diamond and diamond-like carbon (DLC) are used as coating materials for numerous applications, ranging from biomedicine to tribology. Recently, it has been shown that the hydrophilicity of the carbon films can be enhanced by silicon doping, which highly ...
Kajita, Seiji, Righi, M. C.
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

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

Influence of roughness on contact interface in fretting under dry and boundary lubricated sliding regimes [PDF]

, 2009
This paper presents experimental results of wear process under dry and boundary lubricated metallic (AISI 1034/AISI 52100) contacting bodies with different surfaces morphologies subjected to a wide range of kinematic fretting conditions.
Kubiak, Krzysztof, Mathia, T.G.
core   +1 more source

Ionic Liquids as Advanced Lubricant Fluids

Molecules, 2009
Ionic liquids (ILs) are finding technological applications as chemical reaction media and engineering fluids. Some emerging fields are those of lubrication, surface engineering and nanotechnology.
Francisco-José Carrión, José Sanes, María-Dolores Bermúdez, Ana-Eva Jiménez   +3 more
doaj   +1 more source

Investigation of the Effect of a Diamine-Based Friction Modifier on Micropitting and the Properties of Tribofilms in Rolling-Sliding Contacts [PDF]

, 2016
The effect of N-Tallow-1,3-DiaminoPropane (TDP) on friction, rolling wear and micropitting has been investigated with the ultimate objective of developing lubricants with no or minimal environmental impact.
Anne Neville, Ardian Morina, Eglin M, Heuberger R C, Ileana Nedelcu, Marcel C P van Eijk, Matsumoto K, Shiomi M, Siavash Soltanahmadi   +8 more
core   +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

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