Multilayered MoS2/C nanospheres as high performance additives to lubricating oils

Abstract The main goal of the present work was the investigation of tribological properties of multilayered hydrothermally synthesized MoS2/C nanospheres as an additive to industrial base oil. The average size of the MoS2/C particles in which MoS2 layers alternate with carbon is about 40 nm. The tests were performed for reciprocating motion conditions through “plane-ball” scheme. The main tribological characteristics (critical point of failure and friction coefficient) changes as functions of the lubricant additives concentration were discussed. The time dependencies of the tribological characteristic were fitted by sigmoid functions. It was found that the addition of 0.1 wt% MoS2/C nanoparticles to the base oils results in 30% up in friction coefficient reduction and 10 times enlarging of critical point of failure.