ナノダイヤモンド粒子の表面官能基に着目した低摩擦メカニズム解析

抄録

Nano-diamond (ND) particles with the average diameter of 4 nm by the detonation method is known as the friction reducer adding to water. But since the mechanism has not been elucidated, how to design the formulation of ND contained engine oils is not clear. In this paper, after the friction test in water, ND particles were extracted by centrifugation and direct observation of the particle surface was attempted, in addition to the surface analysis (SEM / EDX / XPS) of the sliding surface. We found that the change of the functional group of the ND particles and the adsorption of the ND on the surface of the sliding portion were observed, resulting in the conclusion that both factors are the influence factors.