Recent Achievements in the Synthesis and Application of Inorganic Nanoparticles as Lubricant Components

Abstract

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Tribological studies of stearic acid-modified CaCu2.9Zn0.1Ti4O12nanoparticles as effective zero SAPS antiwear lubricant additives in paraffin oil

“…[33][34][35] With the rapid development of nanoscience and nanotechnology, nanoparticles have attracted much attention due to their unique properties and promising applications in electronics, photonics, magnetism and tribology. [36][37][38][39] In the eld of tribology, several types of inorganic nanoparticles such as CaO, CuO, ZnO, TiO 2 , lanthanum borate, [40][41][42][43][44][45] etc. have been successfully used as antiwear and extreme pressure lubrication additives.…”

“…44 Keeping this in mind, many researchers have prepared surface-modied nanoparticles which do not agglomerate, forming relatively much stable dispersions in base oil and nd pronounced application in tribological industries. 45 Capping nanoparticles with the polar organic molecules is a convenient way to stabilize them since the polar group of a capping agent interacts chemically with the surface of nanoparticles and its non-polar long alkyl chain enhances the solubility of nanoparticles in the base oil, thus, improving the tribological properties.…”

Tribological properties of nano‐calcium borate as lithium grease additive

“…Over the past few decades, nanostructured materials have attracted great attention in various research fields because of their special physical and chemical properties. In the field of tribology, the application of nanoparticles as lubricating additives has received considerable attention . Numerous nanoparticles have been investigated as lubricant additive, such as metal oxides, rare earth compounds, metals, metal carbonate, borates and silicon dioxide …”

Synthesis, characterization and tribological behavior of oleic acid-capped core-shell lanthanum borate-SiO2 composites

“…However, nanoparticles are easy to aggregate because of their high surface energy. Thus, surface modifications with organic agents are widely used to improve the surface properties of nanoparticles (Bakunin et al, 2005;Liu et al, 1990Liu et al, , 1996Liu and Guo, 2007;Zhang et al, 1998Zhang et al, , 2001Hu et al, 2000;Chen and Liu, 2006). Chen and Liu (2006) synthesized OA capped nanoparticles and found that the existence of the surface-capping layer could effectively prevent the agglomeration and growth of nanoparticles.…”