Results 21 to 30 of about 484 (177)

Effects of Contamination on Selected Rheological and Tribological Properties of Lubricating Greases Working in Underground Mines

Lubricants, 2023
This study examines the effect of mining pollutants and wear products on the rheological and tribological properties of a lubricating grease working in the microclimate of the Polkowice-Sieroszowice mine belonging to the KGHM Polska Miedź Group ...
Maciej Paszkowski, Piotr Aleksander Stelmaszek, Justyna Krzak   +2 more
doaj   +1 more source

Analysis of standards for testing lubricity properties on a four-ball apparatus used in Poland [PDF]

Biuletyn Wojskowej Akademii Technicznej, 2020
The article presents historical review of the Polish standards for testing the extreme-pressure and anti-wear properties of lubricants on a four-ball apparatus, commonly used in the world for this type of test-ing.
Arkadiusz Chodkiewicz, Tadeusz Kałdoński   +1 more
doaj   +1 more source

Influence of Mechanical, Thermal, Oxidative and Catalytic Processes on Thickener Structure and Thus on the Service Life of Rolling Bearings

Lubricants, 2022
Constant further developments in application technology with the aim of higher economic efficiency and power density place ever greater demands on mechanical components and construction elements and thus on the lubricating greases used.
Markus Grebe, Michael Ruland
doaj   +1 more source

Recycled and Virgin HDPEs as Bleed Inhibitors and Their Rheological Influences on Lubricating Greases Thickened with PP and mPP

Lubricants, 2014
Polypropylene (PP) thickened lubricating grease exhibits high oil bleed tendency at low temperatures, which makes it a promising candidate for low temperature applications.
Ravi Dixena, Eltepu Sayanna, Rajendra Badoni   +2 more
doaj   +1 more source

Conductivity and tribological properties of IL-PANI/WS2 composite material in lithium complex grease

Friction, 2022
An ionic liquid-polyaniline/tungsten disulfide (IL-PANI/WS2) composite was synthesized in 1-butyl-3-methylimidazole tetrafluoroborate (LB104) aqueous solution by in-situ polymerization and characterized by Fourier transform infrared spectroscopy.
Yanqiu Xia, Yuanhui Wang, Chenglong Hu, Xin Feng   +3 more
doaj   +1 more source

Rheological Evaluations of Solidified Lubricating Greases and Their Base Oils under Very High Pressure

Tribology Online, 2013
Some of high-pressure rheology of solidified lubricating greases and their base oils were estimated up to 3.5 GPa by metal microsphere deformation analysis in a diamond-anvil pressure cell (DAC) under the quasi-static compression condition. From aluminum
Yuichi Nakamura, Takashi Yukawa, Sachiko Kubo, Masahito Matsui   +3 more
doaj   +1 more source

Isocyanate-Functionalized Chitin and Chitosan as Gelling Agents of Castor Oil

Molecules, 2013
The main objective of this work was the incorporation of reactive isocyanate groups into chitin and chitosan in order to effectively use the products as reactive thickening agents in castor oil.
José M. Franco, Rocío Gallego, Jesús F. Arteaga, Concepción Valencia   +3 more
doaj   +1 more source

Nano-montmorillonite-doped lubricating grease exhibiting excellent insulating and tribological properties

Friction, 2017
Three types of nano-montmorillonite were doped as additives to afford lubricating greases. The physicochemical, insulating, and tribological performances of the obtained lubricating greases were investigated in detail.
Zhengfeng Cao, Yanqiu Xia, Xiang Xi
doaj   +1 more source

On the Flow Dynamics of Polymer Greases

Lubricants, 2022
In this paper, the flow dynamics of polymer greases was investigated using micro-particle image velocimetry. Polymer greases have a different thickener structure, compared to widely used lithium-based greases, and they have the well-known ability to ...
Josep Farré-Lladós, Lars G. Westerberg, Jasmina Casals-Terré, Johan Leckner, René Westbroek   +4 more
doaj   +1 more source

Enhancing tribological performance: A comprehensive review of graphene-based additives in lubricating greases

Results in Engineering
The integration of carbon-based additives, such as graphene, graphene ox- ide (GO), and reduced graphene oxide (rGO), into lubricating greases has attracted significant interest in the field of tribology. These materials exhibit unique properties such as
Ethan Stefan-Henningsen, Nathan Roberts, Amirkianoosh Kiani   +2 more
doaj   +1 more source