Abstract
The present investigation is focused on the enhancement of tribological properties of 5W-30 engine oil by the addition of Cr2AlC MAX phase nanolamella. The anti-wear properties of engine oil were investigated by four-ball test rig, using stainless steel balls. The obtained results were compared with h-BN and MoS2 nanoparticles incorporated 5W-30 engine oils. Cr2AlC added nano-fluid (modified lubricating oil) enhances anti-wear properties significantly and increased oil film strength (OFS) of base oil to almost three times. Among all, Cr2AlC nanolamella additivated engine oil shows low coefficient of friction (COF) and wear, as compared to that of h-BN and MoS2 modified oils. Cr2AlC modified oil yields least iron content in the oil after the tribo-test. This could be attributed to the high aspect ratio of Cr2AlC crystals than that of MoS2 and h-BN crystals, and the formation of relatively high strength tribofilms. Among all the prepared lubricating oil, Cr2AlC nanolamella additivated engine oil possesses higher stability.
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