Dry Slide Wear Behavior of Graphite and SiC, TiO2 Filled the Unidirectional Glass-Epoxy Composites

摘要

This study determines the friction and the wear properties of the unidirectional glass epoxy composite with Gr, SiC TiO2 powder by using pin on disk apparatus. This tribological data is obtained in dry sliding condition for a constant sliding time of 30 minutes. Test specimens are prepared using hand lay-up process and by varying the different (2, 5, 7) percentage each of graphite and SiC, TiO2 particles addition for the combination of fiber and matrix. The tests are performed by varying the operating parameters of contact pressure (p) and velocity (v). The composites (2 5, and 7) are worn by dry sliding at the steel counter face under ambient conditions. The coefficient of friction reaches maximum of 0.78 at 2 kg load, 2 m/s velocity with testing time duration of 24 min. whereas 5, 7 sample shows the coefficient of friction 0.28, 0.25 respectively. The specific wear rate value drops to 0.79 (mtn(3)/N-mx10(-6)) at 2 kg load at 2 m/s velocity for the 5 specimen. The maximum reduction in the specific wear rate at 3 kg load, lm/s velocity is 32.7 percentages, 5.63 percentages for the 5,7 percentage specimen compared to 2 specimen for the graphite and SiC,TiO(2)particle filled composite specimen respectively. The SEM images are also taken to support the results.