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Ablation of C/SiC-HfC composite prepared by precursor infiltration and pyrolysis in plasma wind tunnel
- Source :
- Journal of Advanced Ceramics, Vol 9, Iss 3, Pp 393-402 (2020)
- Publication Year :
- 2020
- Publisher :
- SpringerOpen, 2020.
-
Abstract
- Carbon fiber reinforced silicon carbide-hafnium carbide (C/SiC-HfC) composite was prepared by precursor infiltration and pyrolysis process. Then, ablation behavior of C/SiC-HfC was evaluated in plasma wind tunnel. It was found that oxide layer formed during ablation significantly influenced the surface temperature. Formation of dense HfO2-SiO2 layer under low heat flux led to stable surface temperature. Silica (SiO2) on the surface was gradually consumed when heat flux increased, resulting in conversion of HfO2-SiO2 on the surface to HfO2. Converted HfO2 with high catalytic coefficient absorbed more energy, causing gradual increase in the surface temperature. Formed oxide layer was destroyed at high heat flux and high stagnation point pressure. After carbon fiber lost the protection of HfO2-SiO2 layer, it burned immediately, leading to surface temperature jump.
- Subjects :
- precursor infiltration and pyrolysis
Materials science
Silicon
Composite number
Oxide
chemistry.chemical_element
Clay industries. Ceramics. Glass
Stagnation point
ablation
Electronic, Optical and Magnetic Materials
Carbide
chemistry.chemical_compound
TP785-869
chemistry
Heat flux
plasma wind tunnel
Temperature jump
Ceramics and Composites
Composite material
C/SiC-HfC composite
Pyrolysis
Subjects
Details
- Language :
- English
- ISSN :
- 22278508 and 22264108
- Volume :
- 9
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Journal of Advanced Ceramics
- Accession number :
- edsair.doi.dedup.....a24357162b606a574f0432bfa804a9ac