Results 31 to 40 of about 1,618 (199)

Modelling Tribochemical Reactions of Lubricants in the UHV Analytical Tribometer

open access: yesTribology Online, 2015
Gas Phase Lubrication (GPL) is used here to lubricate counterparts of a tribological system with a partial pressure of a gas. Because the rheological contribution (Hydrodynamic and EHL) of gas is practically negligible, the role of tribochemical ...
Maria Isabel De Barros-Bouchet   +5 more
doaj   +1 more source

Effect of Lubricant Additives on the WDLC Coating Structure When Tested in Boundary Lubrication Regime [PDF]

open access: yes, 2015
Improvements in coating deposition technology enable the mass production of high-quality diamond-like carbon (DLC) coatings at an industrial scale and also increase their use in lubricated contacts.
Brown, A   +4 more
core   +1 more source

Contacts With Negative Work of “Adhesion” and Superlubricity [PDF]

open access: yes, 2020
Van der Waals forces between solids in vacuum are always attractive and are considered as the main source of adhesion. However, in the presence of an intermediate medium, they can also be repelling (Dzyaloshinskii et al., 1961) which means that the “work
Popov, Valentin L.
core   +1 more source

Kinetic Study on Lubricity of MoDTC as a Friction Modifier

open access: yesTribology Online, 2019
The temperature dependence of friction coefficient of lubricant oils containing MoDTC was evaluated using a ball on disk tribometer at constant temperatures of 25, 40, 60 and 80°C.
Masanori Komaba   +4 more
doaj   +1 more source

Tribochemistry and Lubrication of Alkaline Glass Lubricants in Hot Steel Manufacturing

open access: yesLubricants, 2020
Nowadays, the increasing demand to reduce energy consumption and improve process reliability requires an alternative lubricant with an effective tribological performance and environmentally friendly properties to replace traditional lubricants in hot ...
Thi D. Ta, Bach H. Tran, Kiet Tieu
doaj   +1 more source

"Ultralow" sliding wear polytetrafluoro ethylene nanocomposites with functionalized graphene [PDF]

open access: yes, 2016
The dry friction and sliding wear behavior of sintered polytetrafluoro ethylene containing various amounts of functionalized graphene were studied in this work. Graphene was incorporated in 0, 0.25, 0.75, 1, 2 and 4 vol.%, respectively.
Karger-Kocsis, J.   +3 more
core   +1 more source

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

Tribochemistry of phosphorus additives: Experiments and first-principles calculations [PDF]

open access: yes, 2015
Organophosphorus compounds are common additives included in liquid lubricants for many applications, in particular automotive applications. Typically, organic phosphites function as friction-modifiers whereas phosphates as anti-wear additives.
Bouffet, A.   +6 more
core   +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

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