Results 11 to 20 of about 12,974 (232)

Structural lubricity under ambient conditions [PDF]

open access: yesNature Communications, 2016
Structural lubricity—referring to ultralow levels of friction between atomically flat, incommensurate surfaces—has previously been observed under ultrahigh vacuum.
Ebru Cihan   +3 more
doaj   +2 more sources

Use of in vitro and haptic assessments in the characterisation of surface lubricity [PDF]

open access: yes, 2018
Lubricity is a key property of hydrophilic-coated urinary catheter surfaces. In vitro tests are commonly employed for evaluation of surface properties in the development of novel catheter coating technologies, however, their value in predicting the more ...
Corbett, Dan J.   +3 more
core   +2 more sources

On the Lubricity and Comparative Life Cycle of Biobased Synthetic and Mineral Oil Emulsions in Machining Titanium Ti-6Al-4V at Low Cutting Speed

open access: yesJournal of Manufacturing and Materials Processing, 2022
The paper discusses an instrumented tapping test method using a CNC machine tool to compare the lubricity of MWFs by cutting threads in a Ti-6Al-4V alloy at low speed. The method uses a spiral flute tap size typical of industrial practice.
Paul Wood   +13 more
doaj   +1 more source

Lubricity of paraffinic fuels additivated with conventional and non-conventional methyl esters

open access: yesAdvances in Mechanical Engineering, 2019
Fuel lubricity prevents wear between metallic parts in relative motion inside the injection system of combustion engines. Among diesel fuels, paraffinic (gas-to-liquid or hydrotreated oils) and biodiesel (methyl esters) fuels are emerging since some of ...
José Rodríguez-Fernández   +3 more
doaj   +1 more source

The lubricity of ethanol-gasoline fuel blends

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2013
In this work the lubricity of several ethanol (hydrated or anhydrous) / gasoline fuel blends was measured by using a conventional HFRR tester. Tests were carried out at 25ºC with no water vapour pressure control, according to the ASTM D6079 standard ...
John Agudelo   +2 more
doaj   +1 more source

Study of the Relationship between the Level of Lubricating Oil Contamination with Distillation Fuel and the Risk of Explosion in the Crankcase of a Marine Trunk Type Engine

open access: yesEnergies, 2023
Fuel contamination of engine lubricating oil has been previously determined to arise from two independent phenomena: the effect on oil flash point, and the effect of changing lubrication conditions on tribological pairs. This paper combines these effects
Leszek Chybowski
doaj   +1 more source

Experimental viscosity measurements of biodiesels at high pressure [PDF]

open access: yes, 2016
The viscosity of biodiesels of soybean and rapeseed biodiesels blended with mineral diesel fuel were measured at pressures of up to 200 MPa. Using a falling sinker-type viscometer reproducible viscosity data were obtained based on the time taken for a ...
Schaschke, Carl
core   +4 more sources

Influence of Solutes on Hydration and Lubricity of Dextran Brushes

open access: yesCHIMIA, 2012
The characteristic lubricity and non-fouling behavior of polymer brushes is critically dependent on the solvation of the polymer chains, as well as the chain–chain interactions.
Tolga Goren   +2 more
doaj   +1 more source

Biodiesel as a lubricity additive for ultra low sulfur diesel [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2010
With the worldwide trend to reduce emission from diesel engines, ultra low sulfur diesel has been introduced with thesulfur concentration of less than 10 ppm.
Subongkoj Topaiboul1 and 2,*   +1 more
doaj  

The Effect of Temperature and Asphaltene Content on the Lubricating Properties of Fuel Oils

open access: yesLubricants, 2023
During coal-based power generation, fuel oil is used to assist with ignition of pulverised coal. Fuel oil passes through several pieces of equipment on its way to the burner section of the boiler.
Trinity Thobejane, Philip L. de Vaal
doaj   +1 more source

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