Abstract:Carbon fiber reinforced ultrahigh temperature ceramic composites were prepared by introducing ultrahigh
temperature ceramic into the matrix of C/ SiC composites. The effect of microstructure and content of ultrahigh
temperature ceramic on the antioxidant properties of the composites at high temperature was studied. The antioxidant
properties of the composites are tested by arc wind tunnel, and the results indicated that the composites’ anti-ablation
property at high temperature could be highly improved by the matrix modification of ultrahigh temperature ceramic, especially
for the composite modified by high content (40wt%) of ZrC. The mass ablation rate of C/ ZrC composites is
7. 37×10-5 g/ (cm2·s) under the arc wind tunnel condition of 2 400 K/ Ma0. 6/0. 5 MPa for 600 s. This composite
could be a candidate material for scramjet application.
