Results 41 to 50 of about 246 (166)

Tribological Properties of Gray Cast Iron Lubricated with PAO and Amine Salt of Alkoxyl Phosphate Additive

open access: yesTribology Online, 2007
The friction and wear properties of gray cast iron (FC250) specimens sliding against AISI 52100 steel ball were evaluated under the lubrication of PAO (poly-alpha-olefin), PAO+ZnDTP (1.5 mass% ZnDTP) and PAO+PN (amine salt of alkoxyl phosphate, 1.5 mass%
Yanqiu Xia   +4 more
doaj   +1 more source

Conventional and unconventional materials used in the production of brake pads – review

open access: yesScience and Engineering of Composite Materials, 2020
Brakes are one of the most important components of vehicle. The brake system must be reliable and display unchanging action throughout its use, as it guards the health and life of many people. Properly matched friction pair, a disc and brake pad (in disc
Borawski Andrzej
doaj   +1 more source

Scuffing failure analysis based on a multiphysics coupling model and experimental verification

open access: yesFriction, 2023
General reductions in lubricant viscosities and increasing loads in machine components highlight the role of tribofilms in providing surface protection against scuffing. However, the relationship between the scuffing process and the growth and removal of
Bugao Lyu   +4 more
doaj   +1 more source

Direct microscopic evidence of shear induced graphitization of ultrananocrystalline diamond films

open access: yesCarbon Trends, 2021
The origin of ultralow friction and high wear resistance in ultrananocrystalline diamond (UNCD) films is still under active debate because of the perplexed tribochemistry at the sliding interface.
K. Ganesan   +3 more
doaj   +1 more source

Effect of Oil Additives on Wear Characteristics in Case-Carburized Steel Coated with Manganese Phosphate

open access: yesTribology Online
This study examines the wear characteristics of case-carburized steel surfaces with manganese phosphate (MnPh) coating under commercial fully formulated oil (FFO).
Kentaro Yamada   +4 more
doaj   +1 more source

Time-Resolved Characterization of Dynamic Tribochemical Processes for Dicationic Imidazolium Ionic Liquid

open access: yesLubricants, 2017
Dynamic tribochemical processes for dicationic ionic liquid containing a geminal imidazolium cation head group bridged by a poly(ethylene glycol) and a bis(trifluoromethylsulfonyl)imide anion were studied using time-resolved mechanically stimulated gas ...
Roman Nevshupa   +3 more
doaj   +1 more source

Superlubricity and tribochemistry of polyhydric alcohols [PDF]

open access: yesPhysical Review B, 2008
The anomalous low friction of diamondlike carbon coated surfaces lubricated by pure glycerol was observed at 80 °C. Steel surfaces were coated with an ultrahard 1 µm thick hydrogen-free tetrahedral coordinated carbon (ta-C) layer produced by physical vapor deposition.
Matta, C.   +6 more
openaire   +3 more sources

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

open access: yesFrontiers 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

Humidity‐Resistant Ultralow Friction in Diamond‐Like Carbon Coatings Enabled by Graphitic Nanodiamonds

open access: yesSmall Structures, Volume 6, Issue 10, October 2025.
The functionalization with graphitic nanodiamonds enhances friction reduction in diamond‐like carbon‐based interfaces. It promotes the formation of a stable, highly graphitic transfer layer, maintaining the core–shell arrangement. This study extends recent advances in superlubricity, providing insights into lubrication mechanisms in humid environments ...
Andrea Mescola   +7 more
wiley   +1 more source

Ionic Liquids as Advanced Lubricant Fluids

open access: yesMolecules, 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   +3 more
doaj   +1 more source

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