The Role of Interfaces in the Oxidation of 3D-Carbon/Carbon Composites

Naslain, R.; Pailler, R.; Bourrat, Xavier; Labruquère, S; Duvivier, Emmanuel

doi:10.1002/9780470294741.ch33

Cited by 3 publications

(1 citation statement)

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“…Summarising all observations, it is clear that the matrix is less prone to sublimation than the fibres, as opposed to the case of oxidation for the same material [20,23], confirming our preliminary work [12]. On the other hand, the presence of a weak phase between the major constituents, already been evidenced in many oxidation cases [13,19,[35][36][37], seems to be confirmed here.…”

Section: Summary Of the Observationssupporting

confidence: 88%

High-flux sublimation of a 3D carbon/carbon composite: Surface roughness patterns

Levet

Lachaud

Ducamp

et al. 2021

Carbon

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3D carbon-fibre reinforced carbon composites (3D C f /C) are used as thermal protection systems for atmospheric re-entry, where they are exposed to strong ablation. Particularly, sublimation of the carbonaceous material plays an important role during the re entry. To study this, an arc image furnace under controlled Argon flow is used, with heat fluxes of 8 MW m −2 to 10 MW m −2 . The furnace and the sample thermal response have been numerically simulated prior to the experiments and match in-situ temperature measurements. Scanning electron microscopy and 3D profilometry with digital optical microscopy were used in order to characterise the epi-macro-structural and the epi-micro-structural roughness of the composite surface, evidencing a faster recession of the fibres as compared to the matrix. Carbon nanotextures have been assessed by using High-Resolution Transmission Electron Microscopy and Polarised Light Optical Microscopy, showing that the matrix is more organised than the fibre.

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