Research Article
Experimental Evaluation of Oxide Nanoparticles as Friction and Wear Improvement Additives in Motor Oil
Figure 9
Optical micrographs of test tracks on the cylinder liner segment near the reversal point for Group IV: (a) PAO, (b) fully formulated 5W-30, (c) PAO + TiO2, and (d) PAO + Al2O3.
(a) |
(b) |
(c) |
(d) |