wear diameter and friction coefficient of the


nano-enhanced paraffin, with diamond and SiO2 nanoparticles acting as the boundary [10]. Depicted in Figure 8, diamond particles and SiO2


at diameters of 110 nm and 92 nm, respectively, decreased wear diameter and friction coefficient at higher weight concentrations. The lowest wear scar diameter was near 0.2 wt % for SiO2


and 0.2 wt %


for diamond. Similarly, the lowest friction coefficient recorded was at the same weight concentration of 0.2% for both nanoparticles. The same study investigated friction coefficient and wear diameter as a function of time and in relation to maximum pressure. In all cases, paraffin enhanced with 0.2 wt % diamond and 0.2 wt SiO2


performed significantly


better than the base paraffin, as seen in Figure 9. In terms of wear scar diameter, SiO2


particles performed


slightly better that diamond particles. It was also concluded that at smaller nanoparticle diameters, there is an overall improved anti-wear performance.


nanoparticles


Figure 9: Friction coefficient and wear scar diameter (mm) as a function of time and maximum pressure (GPa) [10].


Figure 8: Friction coefficient as a function of additive weight concentration [10].


Conclusions and future research The incorporation of nanoparticles into dielectric greases presents a promising avenue for enhancing the performance and reliability of EV components. Through a comprehensive review of studies, investigating AC breakdown voltage and tribological properties, it is evident that particles such as nano-SiO2


and nano TiO2 offer improvements in key metrics relevant to EV applications. For AC Continued on page 20 LUBE MAGAZINE NO.186 APRIL 2025 19


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