Tribological Performance of Nanocomposite Carbon Lubricant Additive

Abstract

In this research, nanocomposite carbon has been found to have excellent tribological properties as a lubricant additive. To reduce high friction and wear in friction pairs, the modified nanocomposite carbon has been prepared for chemical technology. The morphology and microstructure of the modified nanocomposite carbon were investigated via TEM, SEM, EDS, XPS, and Raman. In this study, varying concentrations (1, 3, and 5 wt. %) within the modified nanocomposite carbon were dispersed at 350 SN lubricant for base oil. The suspension stability of lubricating oils with the modified nanocomposite carbon was determined by ultraviolet-visible light (UV-VIS) spectrophotometry. The friction and wear characteristics of lubricants containing materials of the modified nanocomposite carbon were evaluated under reciprocating test conditions to simulate contact. The morphology and microstructure of the friction pair tribofilms produced during frictional contact were investigated via SEM, EDS, and a 3D surface profiler. The results showed that scratches, pits, grooves, and adhesive wear were significantly reduced on the surface of the friction pair which was used with 3% nanocomposite carbon lubricant. Additionally, the modified nanocomposite carbon showed excellent friction reducing and anti-wear performance, with great potential for the application of anti-wear.

Rheological and tribological characterization of novel modified graphene/oil‐based nanofluids using force microscopy

“…Since the rotation speed (i.e., sliding speed) cannot be changed in the device used, the relationship between sliding speed and friction force was not investigated. The average of the friction coefficient values obtained in (Winer, 1967;Xue, Wang, Wen, Wang, & Wang, 2019). In the nanofluid with low nanoparticle concentration, the amount of nanoparticle accumulated on the surface is not sufficient to reduce friction (Wan, Jin, Sun, & Ding, 2015) In this study, as the particle concentration in the nanofluid increased, the roughness on the friction surfaces was effectively filled with accumulated nanoparticles, causing the friction coefficient to decrease.…”

“…It was determined that the friction coefficient decreases as the concentration of silane‐modified GNS in nanofluid increases. Base oil tends to form a thin film between rubbing surfaces, then in the case of base oil containing nanoparticles, nanoparticles can accumulate on rubbing surfaces (Winer, 1967; Xue, Wang, Wen, Wang, & Wang, 2019). In the nanofluid with low nanoparticle concentration, the amount of nanoparticle accumulated on the surface is not sufficient to reduce friction (Wan, Jin, Sun, & Ding, 2015) In this study, as the particle concentration in the nanofluid increased, the roughness on the friction surfaces was effectively filled with accumulated nanoparticles, causing the friction coefficient to decrease.…”

“…Various mechanisms have been proposed related to the positive effect of nanoparticles on friction and wear resistance. There are mechanisms such as film formation due to particle accumulation, acting as a ball bearing between the contact surfaces, and forming patches on the surface (Liu et al, 2004; Ou et al, 2010; Xue et al, 2019). As a result, the nanofluids were used successfully as both antifriction and anti‐wear lubricants as a base oil substitute.…”

Characterisation of self‐repairing layer formed by oleic acid modified magnesium silicate hydroxide

“…The SEM of the worn surface is shown in Figure 7. The wear surface of pure POE oil is a typical adhesive wear morphology with many exfoliations, furrows and metal burrs on the surface 30,31 . With the addition of OA‐MSH, the wear surface becomes smoother with shallow furrows.…”

A Review on Thermophysical Properties for Heat Transfer Enhancement of Carbon‐Based Nanolubricant

“…Xue et al investigated on modified and unmodified nanocomposite carbon in 350 SN lubricant. [ 86 ] A UV spectrophotometer was used to measure the suspension stability of nanolubricants. Results showed that the modified nanocomposite carbon lubricant generated a stable and homogenous suspension compared with that of unmodified nanolubricant.…”