Tuning the spectral emittance of α-SiC open-cell foams up to 1300 K with their macro porosity
- LTN, UMR CNRS 6607, Université de Nantes, 44306 Nantes (France)
- IUSTI, UMR CNRS 7607, Université AMU, Marseille (France)
- CEMHTI, UPR CNRS 3079, Université Orléans, Orléans (France)
- PROMES, UPR CNRS 8521, Université Perpignan Via Domitia, Font-Romeu Odeillo (France)
A simple and robust analytical model is used to finely predict the spectral emittance under air up to 1300 K of α-SiC open-cell foams constituted of optically thick struts. The model integrates both the chemical composition and the macro-porosity and is valid only if foams have volumes higher than their Representative Elementary Volumes required for determining their emittance. Infrared emission spectroscopy carried out on a doped silicon carbide single crystal associated to homemade numerical tools based on 3D meshed images (Monte Carlo Ray Tracing code, foam generator) make possible to understand the exact role of the cell network in emittance. Finally, one can tune the spectral emittance of α-SiC foams up to 1300 K by simply changing their porosity.
- OSTI ID:
- 22611495
- Journal Information:
- AIP Advances, Vol. 6, Issue 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
- Country of Publication:
- United States
- Language:
- English
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