Sulfur-containing molybdenum compounds as high-performance lubricant additives (Review)

Published data on the use of sulfur-containing molybdenum compounds as additives for lubricants used in modern technology are reviewed. Various types of sulfur-containing molybdenum compounds as friction modifiers have been considered, and aspects of their activity and mechanism of action have been discussed. The role of these additives as inhibitors of oxidation of hydrocarbon materials has been shown. The environmental problems of using heavy metal compounds in lubricant additive formulations are discussed. The results of recent studies on the use of nanosized molybdenum sulfide particles as friction modifiers are presented.