Abstract
Lower friction coefficient and higher wear resistance of conventional epoxy resin based formulation were achieved by the addition of nano scale titanium dioxide (TiO₂). Two particle size of 17 and 50 nano meter TiO₂ diameters are used. Meanwhile, several weight percentages of 1,3,5,10% of TiO₂ in respect to Epoxy resin were investigated.  Dry sliding wear tests indicate that the epoxy-based system exhibits significant improvement in the tribological performance at rather low filler content (1 wt.%). Nano particles were found to produce a lower friction coffient and higher wear resistance when compared with sub micron particles. This result may lead to a different concept to achieve, with less cost, better wear resistance out of the currently used epoxy coatings. Scanning Electron Microscopy (SEM) was used to investigate the wear mechanism of the worn surfaces. It was concluded that improving the tribological performance of a polymer-filler mix can be achieved by optimizing the filler content.