Publication

Abstract : Vegetable oil bio-based lubricants are regarded as a suitable alternative to petroleum-based lubricants due to the increasing environmental concerns in past years. This study presents sunflower oil's viscosity and tribological properties with additions containing 0.25 to 1% weight percentage ZnO nanoparticles. The magnetic stirrer and ultrasonicator were used to prepare the samples of lubricants. The Redwood viscometer is used to measure the viscosity. The closed cup tester by PenskyMartin is employed to measure flash and firing points. Using a four-ball tester, friction and wear characteristics such as wear scar diameter and coefficient of friction was determined. The outcomes are compared with those obtained using mineral oils and pure sunflower oil. Flash and fire points are significantly increased even though the modest rise in viscosity is not significant enough.