|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||2016 Functional Nanomaterials: Emerging Nanomaterials and Techniques for 3D Architectures
||The Influence of Shape and Surface Chemistry on Solvated Nanodiamonds as Lubricant Additives
||Farshad Saberi-Movahed, Donald Brenner, Olga Shenderova
|On-Site Speaker (Planned)
Detonation nanodiamonds have emerged as promising additives to a variety of base lubricants. Recent laboratory experiments have shown that nanodiamonds as lubricant additives are capable of eliminating wear and drastically reducing friction. To better understand how nanodiamond’s surface chemistry and shape influence the tribological performance, we have carried out molecular dynamics simulation of solvated nanodiamonds between sliding interfaces. Our initial simulations have focused on understanding the role of particle shape and surface chemistry on viscosity of base fluid, friction coefficient between sliding surfaces and water, and the motion of the nanodiamonds. We have observed that faceted nanodiamonds experience more rotation than round nanodiamonds. In addition, nanodiamonds with surface functionalization (to saturate dangling bonds) result in an enhanced reduction in local viscosity of water compared to nanodiamonds with unsaturated carbon atoms on the surfaces. Simulation results for nanodiamonds with different surface functional groups, different shapes and morphologies will be discussed.