Comparison of thermal and ablation behaviors of C/SiC composites and C/ZrB2–SiC composites

Plasma wind tunnel testing of ultra-high temperature ZrB2–SiC composites under hypersonic re-entry conditions

“…This configuration conversely gives rise to harsher heat fluxes at the stagnation point, on the order of some MW/m 2 , that in turn lead to generated surface temperatures exceeding the usage temperature of conventional aerospace materials, such as carbon fiber reinforced SiC matrix composites. 7 The utilization of materials with high thermal conductivities at high * Corresponding author. Tel.…”

Ablation mechanism of C/C–ZrB 2 –ZrC–SiC composite fabricated by polymer infiltration and pyrolysis with preform of C f /ZrB 2

“…(iii) The gaseous products (CO n , SiO 2 and B 2 O 3 ) are generated due to the oxidation of the composite; the gaseous products attempt to diffuse towards the surface and thus move out of the composite so many small pores are formed in the glass layer ( Fig. 7) [30,31]. These pores provide the channels for the Fig.…”

High-enthalpy test environments, flow modeling and in situ diagnostics for characterizing ultra-high temperature ceramics

“…78 However, the spectral range of the FTIR instrument used in this work was only 8-14 m and this limited range contains just ∼40% of the radiative power emitted at 200 • C and less than 10% of the emitted power at 800 • C. The derived emittance values are thus tenuous approximations for the total emittance.…”