Ablation resistance of ZrC-based composite coating with multi-layer structure for carbon/carbon composites above 2200 °C

The realization of the functionalized design of the coating is an effective measure to improve the ablation resistance of the coating. ZrC-based composite with multi-layer structure coating was designed and successfully prepared on the surface of SiC coated C/C composites. The ablation resistance of coating under different ablation times was evaluated. Results show that although the integrity of the coating was destroyed, the area close to the substrate still maintains a dense structure with the extension of ablation time. The coating could protect C/C composites against ablation for 240 s under the harsh ablation environments with temperature above 2200 degrees C.

Automated summary

The realization of functionalized coating design is an effective means to enhance the ablation resistance. A multi-layer structure coating based on ZrC composite was successfully developed and applied on the surface of SiC coated C/C composites. The coating demonstrated excellent ablation resistance for 240 s under harsh ablation environments with temperatures exceeding 2200 degrees C.