Ablation behavior of nose-shaped HfB2-SiC modified carbon/carbon composites exposed to oxyacetylene torch
| Autor: | Qiangang Fu, Jun-Ling Qu, Jia-Ping Zhang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Borosilicate glass 020209 energy General Chemical Engineering medicine.medical_treatment 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Ablation Corrosion Oxyacetylene torch Modified carbon Heat flux 0202 electrical engineering electronic engineering information engineering medicine Carbon composites General Materials Science Composite material 0210 nano-technology Layer (electronics) |
| Zdroj: | Corrosion Science. 151:87-96 |
| ISSN: | 0010-938X |
| DOI: | 10.1016/j.corsci.2019.02.015 |
| Popis: | Nose-shaped C/C-H fB2-SiC with good mechanical property were fabricated by PIP. During ablation in 2.38 MW/m2 using oxyacetylene torch, the composites showed good ablation performance and structural stability. Because of the nose-shaped feature, protective ablation products including borosilicate glass, HfO2-glass and HfO2 scale covered on the surface according to their distances to the nose tip, which were beneficial for enduring the heating conditions. As heat flux increased to 4.18 MW/m2, more serious ablation occurred, and the protective performance degradation of the ablation products accelerated, especially at the nose tip, the partly ruptured HfO2 layer was difficult to withstand the enhanced denudation. |
| Databáze: | OpenAIRE |
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