Abstract Friction and wear are ubiquitous, from nano-electro-mechanical systems in biomedicine to large-scale integrated electric propulsion aircraft carriers. Applications of nanomaterials as lubricating oil additives have achieved great advances, which significance control friction wear. This review focuses on the applications comprehensively compares their tribological characteristics additi...

Self-lubricating bearings in hydropower applications are often lubricated with water under boundary lubricating conditions. Polyhydric alcohols replacing water have shown the potential to reduce both friction and wear. The objective of this work is, therefore, to evaluate the effect of a polyhydric alcohol-based environmentally-acceptable lubricant (EAL) on the friction and wear of self-lubrica...

The research was carried out at the Federal Research Center named after I.V. Michurin (Tambov region, Russia), using a promising apple cultivar Berkutovskoye with high susceptibility to superficial scald. aim of study influence storage technologies different oxygen content in atmosphere on losses from scald and other diseases fruit cv. Berkutovskoye. Control 1-MCP-treated fruits were stored und...

Lubricating oil flow characteristics are the primary concern in main reducer of light helicopters. To improve lubricating performance reducer, a special lubrication system is innovatively constructed by adding two oil-guiding tubes to hub output gear, and influence investigated through CFD (computational fluid dynamics) techniques. A model gearbox integrated with VOF (volume fluid) technique wa...

The modeling of the heat transfer performance of supercritical carbon dioxide with a small amount of entrained PAG-type lubricating oil is presented in this paper. Due to the complexity of the heat transfer mechanism, including the complexity of the changes in the thermophysical properties, changes in the solubility of CO2 in oil, and the flow pattern at different temperatures and pressures, a ...

The nanoporous structure of oil-impregnated porous copper is closely related to its tribological and oil-retention properties, which are essential for anti-friction anti-wear, long-lasting lubrication. In this study, different component Cu-Al precursors were obtained via plasma-activated sintering, followed by a dealloying method obtain bulk with porosities. effect the on capacity properties wa...