Research Article
Experimental Evaluation of Oxide Nanoparticles as Friction and Wear Improvement Additives in Motor Oil
Figure 4
Optical micrographs of ball wear scars for (a) PAO, (b) fully formulated 5W30, (c) PAO + TiO2, and (d) PAO + Al2O3.
| (a) |
| (b) |
| (c) |
| (d) |