Abstract
Abstract The present study examines the tribological characteristics of biodiesel by using a four-ball tribometer. This research focuses on the friction and wear characteristics of Navicula sp. algae biodiesel with La2O3 at varying concentrations. Biodiesel has been evaluated for blended fuels such as B20, B20 + La2O3 (50 ppm), and B20 + La2O3 (100 ppm). The test was conducted at a constant speed of 1200 rpm and 75 °C at an average load of 40 kg per 1 h. The experimental results indicate that La2O3 added nanoparticles to Naviculla Sp. algae methyl ester show significant friction reduction. It was found that B20 + La2O3 (100 ppm) decreased the wear scar diameter up to 36.9% Compared to B20. The wear rates of the balls were tested by scanning electron microscope.
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