Abstract
Two structural designs are based on the arapaima fish scale structure to enhance the performance of composites. A double-layer SiC/PyC coating was deposited to modify C/C-HfC-SiC composites by chemical vapor deposition. The introduction of PyC coating reduced the porosity and roughness of composites. Ar-O2-Al2O3 plasma ablation system was used to assess the composites. The composites with arapaima fish scale structure showed good flexural and ultra-temperature particle erosion resistance. The samples with the introduction of PyC layer showed higher flexural strength of 220 MPa, which is 40.13 % higher than that of without. After ablation 40 s, the linear ablation rates decreased from 5.95 μm/s to −4.6 μm/s. This study provides new ideas to develop C/C composites with improved ablation-resistant and mechanical properties.
Original language | English |
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Pages (from-to) | 49480-49489 |
Number of pages | 10 |
Journal | Ceramics International |
Volume | 50 |
Issue number | 23 |
DOIs | |
State | Published - 1 Dec 2024 |
Keywords
- Ablation
- C/C composites
- Flexural strength
- Reactive melt infiltration