Fabrication of dense 2D SiC fiber-SiC matrix composites by slurry infiltration and a stacking process

This paper reports a new process for producing dense 2D SiC fiber-SiC (SiC/SiC) composites through slurry infiltration and stacking. The processing strategy for the fabrication of the 2D SiC/SiC composites involves: (i) infiltration of the SiC fiber fabric using a SiC slurry, (ii) stacking the slurry-infiltrated SiC fiber fabric and SiC tapes alternately at room temperature, (iii) pyrolysis of the stacked composites and (iv) hot-pressing the pyrolyzed composites. It was possible to obtain dense 2D SiC/SiC composites with relative densities of >96% by controlling the hot-pressing time at 1750°C.