Friction, Wear, and Scuffing Characteristics of Marine Engine Lubricants with Nanodiamond Particles

Tribological investigation of diamond nanoparticles for steel/steel contacts in boundary lubrication regime

“…The reduction in friction coefficient is due to the combined effect of h-BN and diamond nanoparticles. The entrapment of ND particles in the asperities and the lubricating effect of h-BN lead to the decrease in the friction coefficient (Kim et al 2016). Apart from this, the smoothening effect of diamond nanoparticles due to their hard nature is one of the possible reasons for decrease in the friction coefficient (Shenderova et al 2014).…”

“…But for the third case, the reduction in friction coefficient is certainly due to the combined effect of CuO and diamond nanoparticles. Earlier studies have reported that these particles provide a ball bearing effect, which leads to the decrease in the friction coefficient (Kim et al 2016;Marko et al 2015). Apart from this, some researchers report that diamond nanoparticles being hard in nature also provide the polishing effect (Shenderova et al 2014).…”

“…This is due to the extreme pressure capability of the diamond nanoparticles. Moreover, higher thermal conductivity of the diamond nanoparticles enables the lubricant to retain the film even at enhanced loads (Kim et al 2016). The optical microscope images (as shown in Fig.…”

“…Apart from these, the heat carrying capacity of diamond nano additives enables their use as antiscuffing agents. Different investigations illustrate that the scuffing life of lubricating oils containing nanodiamonds may increase by manifold (Elomaa et al 2013;Kim et al 2016, Chu et al 2010. This is essentially due to the retention of oil films even at high loads.…”

Interfacial Nanostructure of 2D Ti3C2/Graphene Quantum Dots Hybrid Multicoating for Ultralow Wear

“…In addition, nanodiamonds, as usual functional materials, also maturely applied in lubricating oils by reducing friction and extending working life. [18,19] In previous research, we tried to combine nanodiamond with 2D Ti 3 C 2 to synthesis 2D composite coating. We found that nanodiamonds could reduce wear and coefficient of friction (COF) of MXenes coating.…”