Fabrication and Properties of 3‐D Cf/SiC–ZrC Composites, Using ZrC Precursor and
Three‐dimensional (3‐D) needled Cf/ZrC–SiC composites were successfully fabricated by polymer infiltration and pyrolysis combined
with ZrC precursor impregnation. The microstructure and mechanical properties of the composites were studied using XRD, SEM and three‐point bending test. The composite with PyC
interphase between fiber and matrix had a bulk density of 2.20 g/cm3, an open porosity of 13%, and a bending force of 356 N, and exhibited a nonbrittle failure behavior due to propagation and deflection of cracks, and fracture and pullout of fibers. The mass lose and linear
recession rate of the 3‐D needled Cf/SiC–ZrC composite during oxy‐propane torch test were 0.010 g/s and 0.001 mm/s, respectively.
The formation of ZrSiO4 melt on the surface of the composite contributed mainly the excellent high‐temperature property.