Influence of monodispersed CuO nanoparicles on the tribological behavior of hydraulic oil

Abstract

The purpose of this paper is to investigate the effects of copper oxide nano particles on the friction and wear properties of AISI 316 steel material when the CuO nano particles are used as hydraulic oil additive. CuO were dispersed at 0.2, 0.5 and 1wt% in hydraulic oil using an ultrasonic for 5 min. Wear and friction coefficient were obtained using sliding tribometer with pin-on-disk configuration, tests were runed under 15 kg, sliding speed of 0.09 m/s and total distance of 1200 m. The worn steel surfaces were analyzed by scanning electron microscope(SEM) after wear. The results showed that CuO nanoparticle that were used as a hydraulic oil additive exhibited reduction in friction coefficient and wear. Addition of CuO nanoparticles to hydraulic oil decreased friction coefficient and wear by 22 and 65% respectively as compared pure hydraulic oil. Suspension with 0.5wt% of CuO had the lowest friction coefficient and wear