Erosion Resistance and Interface Properties of Epoxy Composite Filled with Graded Silicon Carbide

In the present study, the effect of graded aggregate on the erosion resistance and interface performance of SiC/EP (epoxy resin) composite was investigated. The graded aggregate (84% 550μm and 16% 110 μm) SiC particles was designed by the modified coarse aggregate void filling approach from the theory of concrete. The erosion mechanism of obtained composite was discussed through the microstructure analysis. Obtained results from different erosion tests showed the graded structure contributed to increasing the hard spots and density, which significantly reduced erosion rate. The mechanical properties and wear fraction indicated that the preferred interface could be obtained using migration with KH-550.