Morphological and tribological analysis of synthetic and commercial sulfures

Lubrication reduces friction between two surfaces that slide over each other and prevents weldingunder high load conditions. Many lubricant bases enhance their applications by the addition ofadditives. Among them, extreme pressure (EP) additives provide properties that can withstand highload conditions, high temperature and high sliding speeds because they provide a low friction or wearinterface to make contact between the metal parts more efficient [1]. The addition of additives enhanceslubricants applications by providing specific properties suitable for enduring conditions.In this work, the morphology and tribological behavior of bismuth sulfides (Bi2S3) and molybdenumsulfides (MoS2) nanoparticles obtained by solvotermal synthesis and those used in commercialadditives were compared.