Abstract
Carbon fiber-reinforced silicon carbide (C/SiC) and zirconium diboride-zirconium carbide (ZrB2-ZrC) modified C/SiC (C/SiC-ZrB2-ZrC) sharp leading edges (SLEs) were prepared in this study. Their ablation behaviors were tested in plasma wind tunnels. The results indicated that the ablation of C/SiC SLEs was controlled by the atomic oxidation of SiC, leading to the elimination of SiC. In contrast, C/SiC-ZrB2-ZrC SLEs showed little reduction in plasma flows. During ablation, a ZrO2 skeleton was formed with silica filling inside by the atomic oxidation of SiC. The ZrO2 skeleton suppressed the consumption of SiC, resulting in the improvement of the ablation resistance of C/SiC-ZrB2-ZrC SLEs.
Original language | English |
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Pages (from-to) | 35-42 |
Number of pages | 8 |
Journal | Composites Part B: Engineering |
Volume | 135 |
DOIs | |
Publication status | Published - 15 Feb 2018 |
Externally published | Yes |
Keywords
- Ceramic-matrix composites (CMCs)
- Corrosion
- Electron microscopy
- High-temperature properties