Tribo-catalysis triggered the in-situ formation of amphiphilic molecules to reduce friction and wear

Polyethylene Glycol Monolaurate Lubrication Triggers Liquid Superlubricity on Diamond-like Carbon Film

“…Therefore, the liquid film under PEGM lubrication had a large thickness and attained elastohydrodynamic lubrication. The thick liquid film prevented the direct contact of the friction pairs, and thus, the tribochemical reaction could not be triggered, making the COF relatively high. , With the increase of the temperature, the boundary lubrication became dominant due to the decreased dynamic viscosity. Since the liquid film became thinner, the roughness asperities of the friction pair collided violently.…”

Contact-electro-catalysis (CEC)

“…38 In addition, catalysts used in tribocatalysis are usually metals or their oxides that should withstand high-temperatures and severe surface abrasions, while also providing active sites for catalysis. 196–198 Benefitting from the ubiquitous nature of the CE effect, CEC is capable of enriching the spectrum of available catalysts, and the catalysts are expected to exhibit superior recyclability and reusability because less damage will be caused during CEC processes. Moreover, tribocatalysis usually requires solid–solid friction pairs to induce violent frictions, thus creating suitable conditions for catalysis.…”