Erosion Wear Behaviors of SiC/epoxy Resin Composite

The effects of SiC particle sizes and impact angles on slurry erosion wear behaviors of SiC/epoxy resin composite were studied by a self-made slurry jet erosion tester. The results showed that the erosion wear resistance of SiC/epoxy resin composite with large size SiC particles was better than that of plain carbon steel, but with small size SiC particles was lower than that of plain carbon steel. By varying the slurry erosion angle, the cutting action of solid particles in slurry parallel to the wearing surface and the impact action of solid particles in slurry perpendicular to the wear surface varied accordingly. This made the erosion wear mechanism vary from ply spalling of SiC paeticles and epoxy resin at low impact angle to fragmentation of SiC particles and fatigue spalling of epoxy resin at high impact angle.