Tribological Behaviour of Biodiesel and Metal Oxide Nanoparticles as Alternative Lubricant: A Pin-on-Disc Tribometer and Wear Study

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V. Ram Babu, M. Jaya Krishna, A. Lakshumu Naidu

Abstract

Metals currently have a wide range of applications in which friction creation is a serious issue. Wear rate increases as a result of constant friction, causing metal deformation. The Pin on Disc equipment was used to test sunflower oil and additives (biodiesel and ZnO). The impact of vegetable oil lubricant, its biodiesel, and nanoparticle added lubricant on the wear of metallic surfaces was investigated. There are seven more lubrication conditions in addition to the dry state. Raw sunflower oil, Raw oil (80 percent) + B20, Raw oil (60 percent) + B40, Raw oil (80 percent) + B20 + Nano1 (0.5 percent), Raw oil (60 percent) + B40 + Nano1 (0.5 percent), Raw oil (80 percent) + B20 + Nano2 (0.2 percent), Raw oil (60 percent) + B40 + Nano2 (0.2 percent), Raw oil (80 percent) + B20 + Nano2 (0.2 percent), Raw oil (60 percent) + B40 A stainless steel disc and a brass pin were utilised in this experiment. At three loads (1, 3 & 5 kgf) and three speeds (300, 500 & 700 rpm), the wear rate, frictional force, and coefficient of friction for all lubricants are examined. Nanoscale particles added to lubricants were proved to improve tribological characteristics significantly. In dry circumstances, the wear rate, frictional force, and coefficient of friction are all increased. Because the presence of ZnO nanoparticles reduces the wear rate, frictional force, and coefficient of friction greatly when compared to basic oil and dry circumstances, nano lubricant has the lowest value.

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