Effect of surface ablation products on the ablation resistance of C/C–SiC composites under oxyacetylene torch
| Autor: | Hejun Li, Heng Wu, Xiaohong Shi, Jun-Liang Zhu, Wei Feng, Lei Liu |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
C oxidation
Materials science General Chemical Engineering medicine.medical_treatment Carbon fibers General Chemistry Ablation Corrosion Oxyacetylene torch chemistry.chemical_compound chemistry visual_art Oxidizing agent medicine visual_art.visual_art_medium Silicon carbide General Materials Science Composite material |
| Zdroj: | Corrosion Science. 67:60-66 |
| ISSN: | 0010-938X |
| DOI: | 10.1016/j.corsci.2012.10.003 |
| Popis: | Single and cyclic ablations under oxyacetylene torch with 2380 ± 10% kW/m 2 heat flux were performed to evaluate the effect of ablation products on the ablation resistance of carbon/carbon – silicon carbide (C/C–SiC) composites separately. As a result of the accumulation of noncrystalline SiO 2 enwrapped SiC, ablation resistance of prepared composites was enhanced with time prolonging under single ablation while it was improved more significantly under cyclic ablation. The ablation products played several key roles during ablation: decreasing surface temperature, acting a barrier to oxidizing species attack and conglutinating defective ablated carbon fibers. |
| Databáze: | OpenAIRE |
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