Hetoroporous heterogeneous ceramics for reusable thermal protection systems

Ortona, Alberto and Badini, Claudio and Liedtke, Volker and Wilhelmi, Christian and D'Angelo, Claudio and Gaia, Daniele and Fischer, Wolfgang (2013) Hetoroporous heterogeneous ceramics for reusable thermal protection systems. Journal of Materials Research, 28 (17). pp. 2273-2280.

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Reusable thermal protection systems of reentry vehicles are adopted for temperatures ranging between 1000 and 2000 °C, when gas velocity and density are relatively low; they exploit the low thermal conductivity of their constituent materials. This paper presents a new class of light structural thermal protection systems comprised of a load bearing structure made of a macroporous reticulated SiSiC, filled with compacted short alumina/mullite fibers. Their manufacturing process is very simple and does not require special devices or ambient conditions. The produced hetoroporous heterogeneous ceramics showed high radiations shielding capabilities up to 2000 °C in vacuum. Even after repeated exposures at higher temperatures, a significant degradation of the SiSiC scaffold was not observed.

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