An Investigation on Tribological Properties and Lubrication Mechanism of Graphite Nanoparticles as Vegetable Based Oil Additive

Figure 6

FE-SEM morphologies of wear scars of disks for various lubrication conditions: ((a) and (b)) dry friction, ((c) and (d)) using LB2000 vegetable based oil without nanoparticles, ((e) and (f)) using vegetable based oil containing 35 nm graphite nanoparticles with the volume of 0.25%, and ((g) and (h)) using vegetable based oil containing 80 nm graphite nanoparticles with the volume of 0.25%.

(a)  N

(b)  N

(c)  N

(d)  N

(e)  N

(f)  N

(g)  N

(h)  N