Enhanced lubrication performance of triethanolamine functionalized reduced graphene oxide on the cold‐rolled surface of strips

Abstract

Triethanolamine functionalized reduced graphene oxide (rGO‐TEA(s)) nanocomposites have been synthesized by the hydrothermal method. The physical and chemical properties of rGO‐TEA(s) with different degrees of functionalization were characterized by transmission electron microscopy, X‐ray powder diffraction, Raman spectroscopy, and X‐ray photon spectroscopy. The cold rolling lubrication of the rGO‐TEA(s) prepared as nano‐lubricant additives were investigated using a two‐high rolling mill. The microscopic topographies of rolled strips were measured and evaluated by several physical characterizations. The results showed that the increase of functionalization time was favored to the reaction of triethanolamine and C–O–C groups on the GO surface, whereas the defects and disorder in graphene structure were repaired according to the intensity ratio of the D band to G band from 1.154 to 1.130. The cold rolling experiment results demonstrated that rGO‐TEA(s) exhibited excellent lubrication properties, especially the rolled surface lubricated by rGO‐TEA‐10h presented few defects and minimum roughness value. The admirable lubrication performance of rGO‐TEA‐10h was attributed to the formation of absorption film and consecutive carbonaceous protective film.

Effect of Surface Roughness and Particle Size on Lubrication Mechanisms of SiO2 Nanoparticles

“…Xiong et al [12] synthesized SiO 2 -reinforced B-N-co-doped graphene oxide and found that the optimal tribological behavior was obtained when the concentration was 0.15 wt.%. Extensive research has been conducted on the lubricating mechanisms of nanoparticles, such as the protective lm mechanism [13,14], the self-repairing mechanism [15,16], rolling friction [17,18], and the deposition e ect [19,20]. While how nanoparticles perform under di erent lubricating conditions is still obscure.…”

Substrate‐dependent enhancement of the durability of EPD graphene coating as a macroscale solid lubricant

“…Graphene is a 2D material with many exceptional properties such as high chemical stability, outstanding lubricity and wear resistance, which makes it a naturally solid lubricant at the microscale 1–4 . While in recent years, thanks to the rapid development of the fabrication method of macroscale graphene films, such as the chemical vapor deposition (CVD), 5 the solution‐processed graphene (SPG), 6 the self‐assembly, 7,8 and the electrophoretic deposition (EPD), 9–11 successful applications of graphene films as solid lubricants have extended to the engineering scale 12,13 .…”

Triethanolamine modified graphene oxide for epoxy resin‐based coatings: Corrosion inhibition on metal substrates

“…30 Therefore, the physical and chemical properties of TEA are useful for modifying GO to prepare composite coatings with improved anti-corrosion performance. Recently, most studies have focused on improving the performance of GO modified by TEA in ion adsorption, 31 supercapacitors, 32 nanofluids, 33 water pollution control, 29 lubrication, and friction applications, 34 among others. However, to the best of our knowledge, few reports have analyzed the anti-corrosion performance of GO-modified TEA as a nanofiller in epoxy coatings.…”