Improving The Tribological Properties Of Lubricants With The Addition Solid Nanoparticles

The purpose of this research is to experimentally investigate the role of copper oxide nanoparticles in improving the tribological properties of the lubricant. This research consists of three stages. In the first stage, copper oxide nanoparticles with weight percentages of 0.1, 0.2 and 0.5 were added as an additive to Behran Super Turbo Diesel SAE 15W-40 oil. An ultrasonic bath was used to disperse the nanoparticles in the fluid, and span80 surfactant was used to stabilize the fluid and prevent solid nanoparticles from settling. In the second stage of the experimental tests, including the wear test using the pin-on-disk wear test device and the thermal conductivity test, were performed. In the third stage, the results of the analysis and the performance of the nano-fluid blends were compared with the base fluid. The results of this research showed a decrease in friction coefficient values, a decrease in wear rate and an increase in thermal conductivity of nano-lubricant blends compared to the base fluid. Based on the results, the lowest coefficient of friction, the lowest amount of wear and the highest coefficient of thermal conductivity are related to the nano-lubricant mixture containing 0.5% by weight of copper oxide nanoparticles. The friction coefficient reduction rate of this nano-lubricant mixture was 37.1% compared to the base oil, the wear reduction rate was 58.3% and the thermal conductivity increase rate was 3.84% compared to the base oil. The results show the positive role of copper oxide nanoparticles as an additive in improving the tribological properties of the working fluid.