The present work explored the use of fatty acid ‘Triangle ester’ molecules (Epoxidized Ester (EE), and Thiirane (TE)) as antifriction antiwear additives at varying levels for Group I II mineral base oils using standard ASTMD-4172B four-ball test. Relative to neat oil, EE blends showed improved by ~61% ~42% properties ~32% ~41% in oils, respectively, while TE friction reduction ~65% ~40% wear ~9...

Abstract The running-in coatings were formed on the surface of tin bronze QSn10-1 by electroerosive alloying (EEA) with soft antifriction materials such as silver, copper, Babbitt B83 and graphene oxide (GO). mass transfer, roughness, coating thickness dry friction coefficient measured analyzed a precision electronic balance, three-dimensional optical profiler, metallographic microscope, scanni...

In this work, two different 2D materials, molybdenum disulfide nanoplatelets (MSNP) and graphene (GNP), prepared by electrochemical exfoliation, were used as additives to prepare nanolubricants. The tribological behaviour of the nanolubricants was evaluated under configurations (pure sliding rolling/sliding) using tribometers: an Universal Macro Materials Tester (UMT-3) a Mini Traction Machine ...

The paper describes studies of the stress-strain state power hydraulic cylinders elements. Geometric dimensions casing and properties materials are chosen as varied parameters. controlled values levels stresses displacements. criteria weight, strength rigidity. These characteristics determine technical cylinders. Dependences criterion on parameters established. On this basis, recommendations fo...

Self-organization mechanisms of metastable dissipative structures during friction depending on base and oil functional additives for hypoid gears are considered. Research was conducted a software-hardware complex with simulation gears’ operation in rolling slipping conditions start-stop mode. Indicators formation wear-resistant include the following: improvement antifriction characteristics, lu...

The tribological performance of a thermal sprayed, mirror-like surface with localized protuberances was investigated through tribotests and computational simulation. A composite coating 410L steel matrix M2 tool hard particles applied by the cold spray process as bore for combustion engines. presence promoted quick formation an antifriction tribofilm when tested SAE 0W-16 containing ZDDP MoDTC,...

To investigate the synergistic effect of oleic acid modification and dispersant on dispersion stability wear resistance graphene in base oil. Modified was prepared by using as surface modifier T161 dispersant. The microstructure characterized SEM Raman. effects were investigated, optimal addition amount determined. At same time, optimum modified determined MMU–10 testing machine. And feasibilit...