A study on friction and wear characteristics of Fe–Cu–Sn alloy with MoS2 as solid lubricant under dry conditions

Abstract

Iron-based alloys are materials of choice for engineering applications such as bearings and gears owing to their low cost, ease of manufacture, high strength, availability, and good wear resistance and low coefficient of friction. In this study, Fe-Cu-Sn composite containing varying percentage of molybdenum disulfide (MoS 2) is developed using simple single stage compaction and sintering. The friction and wear behaviors of these composites were studied ball-on-disc tribometer in which EN8 steel ball was used. It was found that with the increase in percentage of MoS 2 from 0 to 3 wt% the coefficient of friction and wear rate substantially decreases from around 0.85 to 0.25. The wear mechanism in base composition (0% MoS 2) is observed to be adhesive and abrasive, whereas mild abrasive wear was observed in the 3 wt% MoS 2 composite. The hardness of composite was also found to improve with the increase in MoS 2 weight fraction.

Tribological properties of novel Al 7075(T6)-SiC-crumb rubber-MoS2-based hybrid composites: An experimental approach towards green revolution

“…As a consequence, the formation of tribo-film against the counter disc facilitates the smooth sliding phenomenon and prevented the pin-disc interface from severe wear loss. [35][36][37] Again, the same trend of tribological attributes in terms of wear loss, frictional force, and CoF under varying temperature conditions were also reported by Moona et al 25…”

Investigation of the Elevated Temperature Tribological Property and Wear Mechanism of Fe–15Cu–0.8C Materials Containing Mo‐Coated MoS2 Powders

“…Additionally, MoS 2 , as a solid lubricant, can significantly enhance antifriction performance of samples. [ 31 ] The introducing Mo‐coated MoS 2 powder can significantly enhance the antifriction properties of Fe–15Cu–0.8C samples under high‐temperature oxidation and reciprocation load by changing the formation of the surface oxide film and prolonging the lifespan of the samples. SEM images of the worn scars after friction and wear test at high temperature reveal the presence of parallel grooves, peelings, and wear debris on the samples, indicating the occurrence of abrasive wear, adhesion wear, fatigue wear, and oxidation during the testing process.…”

Prediction of coefficient of friction of solid powder lubricants under high pressure conditions using machine learning algorithms

“…Previous studies have utilized various dry granular powders in conjunction with materials such as metals, polymers, ceramics, sintered metals, and composites to enhance tribological properties. For instance, the addition of molybdenum disulphide to iron-copper-tin composite materials resulted in notable reductions in the coefficient of friction and wear rate [19]. Additionally, an investigation focused on EN 31 alloy steel bearing material employed conventional lubricant SAE 20 W40 with molybdenum disulphide particles of different sizes as an additive, varying the loads between 75 N, 100 N, and 125 N [20].…”