Abstract
Abstract In this study, the tribological characteristic of aqueous dispersions of single-layer graphene oxide (GO) sheets was assessed as a function of pH. The flexible and large GO sheets were broken down and chemically reduced upon increasing the pH from 3.10 to 9.70. By using the 0.06 wt% GO suspension, the noise and vibration in tribological tests were eliminated, at the same time, the coefficient of friction (COF) and wear mark radius were reduced by 44.4% and 17.1%, respectively, compared with baseline water. While the increase of pH of the GO suspensions increased COF and wear significantly. The difference of the lubricating mechanism of the GO suspensions was attributed to the change of morphological and physicochemical properties of the GO sheets.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
