Exploring Lubrication Function of MACs Greases for TC4 Alloy Under Sliding and Fretting Conditions

Tribological Behavior of WS2 Nanoparticles as Additives in Calcium Sulfonate Complex–Polyurea Grease

“…Wang Z [21] et al added organic molybdenum compounds to CSCG and found that they had very low friction coefficients (0.065) at 400 N and 500 N (maximum Hertz pressures of 3.47 GPa and 3.74 GPa, respectively). Fan X [22] studied the lubrication effect of polyalkyl cyclopentane (MAC) CSCG on TC4/steel contact under sliding and fretting conditions, finding that its antifriction performance was better than its wear resistance and that the good lubrication function of polyalkyl MAC CSCG under sliding friction mainly depended on the synergistic effect of the grease film and the chemical reaction film caused by the friction. Liu D [23] found through X-ray photoelectron spectroscopy (XPS) analysis that calcium sulfonate grease would form a boundary friction film composed of iron oxide and FeSO 4 , which has good water absorption performance [24,25].…”

Improved tribological and bearing vibration performance of calcium sulfonate complex grease dispersed with MoS2 and oxide nanoparticles

“…It has attracted people’s attention for its excellent extreme pressure/wear resistance, corrosion resistance, water resistance, and high temperature resistance. 24 Fan et al 25 found that CSCG with multi-alkylated cyclopentane (MACs) as base oil had good lubrication performance under fretting and sliding conditions, especially the friction coefficient decreased obviously. Zhou et al 26 argued that CSCG based on mineral oil and synthetic oil had good shear stability and excellent water absorption ability, which could avoid the formation of free water, so it kept the bearings from corrosion in wet environment.…”