Authors : Basim Ajeel Abass and Jawad Kadhim Oliewi
Abstract: The wear behavior in dry condition for epoxy reinforced by Al2O3 and TiO2 nanopowders with a constant sliding time of 10 min has been investigated experimentally in the present research and nanoparticles average diameters of both powders have been determined using AFM technique and it was found (78.52 nm) for Al2O3 and (52.56 nm) for TiO2 . Pin on disc wear test machine with 950 rpm speed and (5-20N) sliding loading has been used to determine the wear rate of the prepared samples. nanocomposite materials made of epoxy with different weight fractions of Al2O3 and TiO2 powders were prepared by hand layout. The effects of adding nanoparticles with four different weight fractions (0.5, 1, 1.5 and 2%) have been discussed. The obtained results demonstrated that the Alumina (Al2O3) nanopowder has a greater effect in decreasing the wear rate of such nanocomposite material than Titanium dioxide (TiO2). A maximum percentage decrease in wear rate of (9.7%) 2 has been recorded for the epoxy reinforced with 0.5% Al2O3 nanopowder in comparison with that reinforced with TiO2 when the applied load was (20 N). Also the wear rate decreases by (47.6 and 43.6%) for the epoxy 2 reinforced with 2% weight fraction of Al2O3 and TiO2 nanopowders, respectively, in comparison with that of pure epoxy when the applied load was (20 N).
Basim Ajeel Abass and Jawad Kadhim Oliewi, 2019. A Comparative Study to the Wear Behavior of Epoxy Reinforced by Tio2 and Al2O3 Nanoparticles. Journal of Engineering and Applied Sciences, 14: 6014-6018.