Research Article
Experimental Evaluation of Oxide Nanoparticles as Friction and Wear Improvement Additives in Motor Oil
Figure 6
Optical micrographs of flat test tracks for (a) PAO, (b) fully formulated 5W-30, (c) PAO + TiO2, and (d) PAO + Al2O3.
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(b) |
(c) |
(d) |