Process study on SiC fillers into 3-D carbon fiber perform by slurry infiltration

In order to introduce a mass of SiC fillers into 10 mm thick 3-D carbon fiber perform, four slurry infiltration method were applied; vacuum infiltration, pressure infiltration, pressure filtration, and vacuum suction straining. The volume fraction of introduced SiC fillers in carbon fiber perform and its distribution were investigated. The results showed that pressure filtration led to the best results. Using a slurry containing 4vol% 1 μm SiC fillers, thrice infiltration introduced 27.4vol% SiC fillers, which packed densely and uniformly.