Abstract
Ablation performance of Cf/ZrC–SiC composites was evaluated in both oxyacetylene torch and plasma wind tunnel and further comparative study was conducted on the ablation behavior under two environments. An oxyacetylene torch test led to a pitting corrosion of Cf/ZrC–SiC composites and their ablated surface was covered by a porous zirconia layer. The Cf/ZrC–SiC nose tip endured the plasma wind tunnel test rather well with only 0.43% height loss after total 1050s exposure due to the formation of a compact zirconia scale. This compact zirconia scale kept its consolidation to the composite body and acted as the ablation-resistant and thermal shielding layer of the nose tip.
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