Abstract
To enhance the cyclic ablation performance of SiC coating from1750 °C to room temperature under vertical oxyacetylene torch, interface design and HfC additive were combined. A porous surface of C/C composites was firstly constructed by oxyacetylene flame so as to form an inlaid interface after the pack cementation preparation of HfC-SiC coating. After 8 ablation thermal cycles, the mass loss per unit area of the HfC-SiC coating was only 36.47 mg cm−2. Based on thermogravimetric analysis, adhesive strength and thermal expansion test, effect of the inlaid interface on oxidation as well as ablation performance of the HfC-SiC coating was discussed.
Original language | English |
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Pages (from-to) | 139-146 |
Number of pages | 8 |
Journal | Corrosion Science |
Volume | 123 |
DOIs | |
State | Published - 15 Jul 2017 |
Keywords
- C/C composites
- Coating
- Cyclic ablation
- HfC-SiC
- Oxyacetylene flame