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In the current study, the radio frequency magnetron sputtering technique was used to sputter a thin layer of titanite nitride (TiN) or silicon nitride (SiN) on the surface of AA2024-T4 alloy. To investigate the wear behavior and coefficient of friction between coated aluminum alloy pin and a steel disc (Ck50) contact bodies, different percentages of Copper oxide (CuO) and molybdenum disulfide (MoS2) Nanoparticles were added to the sunflower and engine (HD 50) oils. The results reveal important enhancement in wear rate and coefficient of friction when Nanoparticles powder was added to the oil in comparison with dry and base oils conditions. The optimum results for wear rate and coefficient of friction were obtained at the 1%wt of both Nanoparticles additive. The results also show a significant enhancement in wear and friction conditions when the surface of the aluminum alloy pin was coated with TiN and SiN in comparison with the uncoated surface.

THE INFLUENCE OF NANO PARTICLES ADDITIVE ON TRIBOLOGICAL PROPERTIES OF AA2024-T4 COATED WITH TiN OR SiN THIN FILMS