The reason why nano diamond is used as a lubricant additive is a ball bearing effect, and the other is a film effect.
(1) Ball-bearing effect
The nano diamond particles can roll between the friction surfaces to form a "ball bearing effect," and the pure sliding friction between the original friction pairs becomes mixed friction of sliding and rolling, thereby reducing wear.
(2) Film lubrication effect
Due to the nano-size fact, elements such as C in the diamond rapidly penetrate the friction sub-base under the action of sliding friction, forming a continuous lubricating film on the surface, which improves the surface hardness and wear resistance of the friction pair. It can withstand higher loads and prevent direct contact with the friction surface. The film lubrication effect is widely used in ultra-precision manufacturing and processing systems, and people's understanding has gradually deepened.
CAS No.: 7782-40-3