Energy efficient reduced graphene oxide additives: Mechanism of effective lubrication and antiwear properties.

ABSTRACT: Optimized concentration of reduced graphene oxide (rGO) in the lube is one of the important factors for effective lubrication of solid body contacts. At sufficiently lower concentration, the lubrication is ineffective and friction/wear is dominated by base oil. In contrast, at sufficiently higher concentration, the rGO sheets aggregates in the oil and weak interlayer sliding characteristic of graphene sheets is no more active for providing lubrication. However, at optimized concentration, friction coefficient and wear is remarkably reduced to 70% and 50%, respectively, as compared to neat oil. Traditionally, such lubrication is described by graphene/graphite particle deposited in contact surfaces that provides lower shear strength of boundary tribofilm. In the present investigation, graphe

SUBMITTER: Gupta B 

PROVIDER: S-EPMC4698732 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature