Results 81 to 90 of about 1,653 (213)

Effect of Chain-Length and Countersurface on the Tribochemistry of Bulk Zinc Polyphosphate Glasses [PDF]

open access: yes, 2018
Zinc polyphosphate glasses are considered to be chiefly responsible for the anti-wear efficiency of ZnDTP tribofilms. In this work, the tribochemical properties of amorphous bulk zinc polyphosphates of different chain lengths (ranging from zinc ...
Crobu, Maura   +2 more
core  

Surface passivation and boundary lubrication of self-mated tetrahedral amorphous carbon asperities under extreme tribological conditions [PDF]

open access: yes, 2014
Tetrahedral amorphous carbon coatings have the potential to significantly reduce friction and wear between sliding components. Here, we provide atomistic insights into the evolution of the sliding interface between naked and hydrogen-passivated ta-C ...
Julian Von Lautz   +3 more
core   +1 more source

Insight into remarkable oil superlubricity enabled by polyether-modified silicone oil on engineering steel

open access: yesFriction
The achievement of a superlubric state with vanishing friction and negligible wear has important applications in minimizing energy dissipation and prolonging the service life of moving mechanical systems.
Qiang Ma   +5 more
doaj   +1 more source

Preliminary characterisation of the surface of cartilage following exposure to saturated and unsaturated synthetic lips [PDF]

open access: yes, 2011
Articular cartilage is covered by a microscopic structure known as surface amorphous layer. This surface structure is often the first victim of attack during cartilage degeneration, thereby resulting in a gross impairment in cartilage function such as ...
Gudimetla, Prasad   +3 more
core   +2 more sources

Electromagnetic Emissions from Quartz Subjected to Shear Stress: Spectral Signatures and Geophysical Implications

open access: yesGeosciences, 2020
Shear tests on quartz rocks and single quartz crystals have been conducted to understand the possible relationship between the intensity of detectable stress in fault areas and the energy released in the form of electromagnetic waves in the range 30 KHz ...
Giovanni Martinelli   +2 more
doaj   +1 more source

Inovação para a sustentabilidade

open access: yesQuímica Nova, 2013
The transition to sustainable standards of production and consumption within a scenario of decreased availability of natural resources, growing population and climate change is essential to meet current challenges facing mankind. A strategy to meet these
Fernando Galembeck
doaj   +1 more source

Preliminary results of the comparison of the electrochemical behavior of a thioether and biphenyl [PDF]

open access: yes
An electrochemical cell was constructed to explore the feasibility of using electrochemical techniques to simulate the tribochemistry of various substances.
Jones, W. R., Morales, W.
core   +1 more source

The tribological properties of zinc borate ultrafine powder as a lubricant additive in sunflower oil [PDF]

open access: yes, 2014
This paper presents an investigation on the tribological properties of zinc borate ultrafine powder employed as a lubricant additive in sunflower oil. The stable dispersions of 0.5 wt%, 1 wt% and 2 wt% zinc borate ultrafine powder in sunflower oil were ...
Chen, Yong   +3 more
core   +1 more source

Synthesis and tribological testing of poly(methyl methacrylate) particles containing encapsulated organic friction modifier [PDF]

open access: yes, 2018
The tribological behaviour of polymer particles containing an encapsulated, organic friction modifier (FM) is presented. Particles comprising of a poly (methyl methacrylate) (PMMA) shall and a methanol core, into which FM was dissolved, were produced via
Anne Neville   +56 more
core   +1 more source

Experimental and theoretical investigations of friction properties of graphite intercalated compounds. [PDF]

open access: yes, 2013
It is classically admitted that the goodfriction properties of lamellar compounds are strongly related to their anisotropic structure and especially to the existence of weak interlayer interactions through the van der Waals gap separating the basal ...
Baranek, Philippe   +6 more
core   +2 more sources

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