An overview of inorganic polymer as potential lubricant additive for high temperature tribology

Facile synthesis of ultrathin NbTe2 nanosheets for enhanced tribological properties as a lubricant additive

“…The tribological mechanism between the rubbing surfaces is vividly proposed in figure . During the sliding with pure paraffin oil, the counterpart can easily penetrate the oil film under normal loads, and an inevitable direct contact subsequently happens between counterparts, generating lots of abrasive particles, and further bringing about deep furrows, high plastic deformation, irregular pits and considerably wide grooves (figure a, d) . When bulk NbTe 2 and NbTe 2 nanosheets are added into paraffin base oil, those additives can fill up the scratched surface to decrease the contact of asperity between the friction surfaces.…”

Hot corrosion of borate melt and interface chemistry of borate-coated steel under tribological stimulation

“…Alkali metal borate has been reportedly used in hot metal processing due to its good lubricity and potential oxidation resistance [12]. In the present study, the interface of oxidized steel and sodium borate melt was examined in details to reveal the corresponding corrosion mechanism at elevated temperature.…”

“…Surface degradation, material loss and impaired lifespan of the tool are highly probable without proper remedy against oxidation. In order to prevent those eventualities, lubrication is widely used and melt lubricants are acknowledged as a potential class [11,12]. From tribology point-of-view, an effectively-lubricated contact interface is always initiated by the formation of a so-called tribofilm which is accountable for friction and wear reduction.…”

Effect of loading on the friction and interface microstructure of lubricated steel tribopairs

“…Inorganic glass as hot metal working lubricant has attracted much attention because it can soften, spread and separate the sliding metallic surfaces by forming a thin film under highly stressed shearing and temperature conditions [1,2]. Inorganic alkali glass lubricant also can prevent surface cracks from forming by reducing the deformation resistance, and reduce the oxidation of workpieces by providing a barrier which retards the oxygen atoms from infiltrating into the workpiece material [3].…”