Fig. 1
From: Operando tribochemical formation of onion-like-carbon leads to macroscale superlubricity
Tribological performance of MoS2 layers mixed with nanodiamond. a Schematic of the experimental setup, b graphs of the coefficient of friction, c wear of the ball, and d micrograph of flat sides for MoS2 mixed with nanodiamond and sliding against H-DLC surface. Negligible wear is indicated by line scan taken across the wear track (inset). The lowest coefficient of friction observed is 0.005 ± 0.002. The test was repeated five times with the measurement uncertainty calculated based on the variations among the tests. The scale bar in Fig. 1d is 100 μm
