Graphene composites as lubricant additives.

Lubricant details			Tribometer	Conditions			Tribological test results		Ref.
Materials	Concentration	Base oil		Load	Speed	Temperature	Wear reduction, %	Friction reduction, %
Hydroxyl modified fluorinated graphene	1 mg mL−1	Water	Ball-on-disk tribometer	50 N	0.05 m s−1	25 °C	—	15%	47
Graphene	0.025 mg mL−1	Engine oil	Four-ball	392 N	600 rpm	75 °C	33%	80%	42
GO/f-CMS	0.2 wt%	85W-90	BOD	40 N	—	—	54%	26%	48
Cu/Gr	0.4 wt%	5W-30	Ring-liner	216–307 N	0.25 m s−1	—	25–30%	26.5–32.6%	39
Titanate-GO	0.3 mg mL−1	PAO10	Four-ball	392 N	1200 rpm	75 °C	28.2%	49.5%	49
OA–LaF3–GO	0.5 wt%	Liquid paraffin	Four-ball	300 N	1450 rpm	25 °C	32%	21.7%	50
RGO/MoS2	0.02–0.08 wt%	Liquid paraffin	Ball-on-disk	50 N	0.04–0.05 m s−1	—	—	45%	51